1.0E-9 is what percent of 7381388155 - 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 7381388155 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 100% equals 7381388155, so we can write it down as 100%=7381388155.
4. We know, that x% equals 1.0E-9 of the output value, so we can write it down as x%=1.0E-9.
5. Now we have two simple equations:
1) 100%=7381388155
2) x%=1.0E-9
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:
100%/x%=7381388155/1.0E-9
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 1.0E-9 is what percent of 7381388155

100%/x%=7381388155/1.0E-9
(100/x)*x=(7381388155/1.0E-9)*x       - we multiply both sides of the equation by x
100=7.381388155E+18*x       - we divide both sides of the equation by (7.381388155E+18) to get x
100/7.381388155E+18=x
1.3547587242416E-17=x
x=1.3547587242416E-17

now we have:
1.0E-9 is 1.3547587242416E-17% of 7381388155