Step 1:
The first step to converting 487145.121875 to a fraction is to re-write 487145.121875 in the form p/q where p and q are both positive integers. To start with, 487145.121875 can be written as simply 487145.121875/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 487145.121875, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 487145.121875/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 487145.121875/1 each by 1000000:
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 487145.121875 as a fraction:
487145/1 / 1