What is 0.00042 percent of 1 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 1 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 1 is 100%, so we can write it down as 1=100%.
4. We know, that x is 0.00042% of the output value, so we can write it down as x=0.00042%.
5. Now we have two simple equations:
1) 1=100%
2) x=0.00042%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
1/x=100%/0.00042%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 0.00042% of 1

1/x=100/0.00042
(1/x)*x=(100/0.00042)*x       - we multiply both sides of the equation by x
1=238095.23809524*x       - we divide both sides of the equation by (238095.23809524) to get x
1/238095.23809524=x
4.2E-6=x
x=4.2E-6

now we have:
0.00042% of 1=4.2E-6