What is 4.0E-6 percent of 75000000 - 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 75000000 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 75000000 is 100%, so we can write it down as 75000000=100%.
4. We know, that x is 4.0E-6% of the output value, so we can write it down as x=4.0E-6%.
5. Now we have two simple equations:
1) 75000000=100%
2) x=4.0E-6%
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:
75000000/x=100%/4.0E-6%
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 4.0E-6% of 75000000

75000000/x=100/4.0E-6
(75000000/x)*x=(100/4.0E-6)*x       - we multiply both sides of the equation by x
75000000=25000000*x       - we divide both sides of the equation by (25000000) to get x
75000000/25000000=x
3=x
x=3

now we have:
4.0E-6% of 75000000=3