Step 1:
The first step to converting 498478.5284384 to a fraction is to re-write 498478.5284384 in the form p/q where p and q are both positive integers. To start with, 498478.5284384 can be written as simply 498478.5284384/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 498478.5284384, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 498478.5284384/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 498478.5284384/1 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 498478.5284384 as a fraction:
498479/1 / 1