Step 1:
The first step to converting 489917912.25263 to a fraction is to re-write 489917912.25263 in the form p/q where p and q are both positive integers. To start with, 489917912.25263 can be written as simply 489917912.25263/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 489917912.25263, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 489917912.25263/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 489917912.25263/1 each by 100000:
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 489917912.25263 as a fraction:
489917912/1 / 1