#### Solution for .0004 is what percent of .001:

.0004:.001*100 =

(.0004*100):.001 =

0.04:.001 = 40

Now we have: .0004 is what percent of .001 = 40

Question: .0004 is what percent of .001?

Percentage solution with steps:

Step 1: We make the assumption that .001 is 100% since it is our output value.

Step 2: We next represent the value we seek with {x}.

Step 3: From step 1, it follows that {100\%}={.001}.

Step 4: In the same vein, {x\%}={.0004}.

Step 5: This gives us a pair of simple equations:

{100\%}={.001}(1).

{x\%}={.0004}(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have

\frac{100\%}{x\%}=\frac{.001}{.0004}

Step 7: Taking the inverse (or reciprocal) of both sides yields

\frac{x\%}{100\%}=\frac{.0004}{.001}

\Rightarrow{x} = {40\%}

Therefore, {.0004} is {40\%} of {.001}.

#### Solution for .001 is what percent of .0004:

.001:.0004*100 =

(.001*100):.0004 =

0.1:.0004 = 250

Now we have: .001 is what percent of .0004 = 250

Question: .001 is what percent of .0004?

Percentage solution with steps:

Step 1: We make the assumption that .0004 is 100% since it is our output value.

Step 2: We next represent the value we seek with {x}.

Step 3: From step 1, it follows that {100\%}={.0004}.

Step 4: In the same vein, {x\%}={.001}.

Step 5: This gives us a pair of simple equations:

{100\%}={.0004}(1).

{x\%}={.001}(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have

\frac{100\%}{x\%}=\frac{.0004}{.001}

Step 7: Taking the inverse (or reciprocal) of both sides yields

\frac{x\%}{100\%}=\frac{.001}{.0004}

\Rightarrow{x} = {250\%}

Therefore, {.001} is {250\%} of {.0004}.

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