Step 1:
The first step to converting 509392.9086339 to a fraction is to re-write 509392.9086339 in the form p/q where p and q are both positive integers. To start with, 509392.9086339 can be written as simply 509392.9086339/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 509392.9086339, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 509392.9086339/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 509392.9086339/1 each by 10000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 509392.9086339 as a fraction:
509393/1 / 1