Finding the Fourth Proportional to 987,638.08, 1,363,051.16 and 557,945.90
Calculator
Solution
The fourth proportional to 987,638.08, 1,363,051.16 and 557,945.90 is: 770,027.82
Step by Step Solution
- Step 1: Write the proportion equation
987,638.08 : 1,363,051.16 = 557,945.90 : x - Step 2: Convert to fraction form
987,638.08/1,363,051.16 = 557,945.90/x - Step 3: Cross multiply
987,638.08x = 1,363,051.16 × 557,945.90 - Step 4: Simplify right side
987,638.08x = 760,508,796,607.26 - Step 5: Solve for x
x = 760,508,796,607.26/987,638.08 - Step 6: Final answer
x = 770,027.82
Related Problems
Find fourth proportional to 493,819.04, 681,525.58 and 278,972.95
Half scale
Find fourth proportional to 1,975,276.15, 2,726,102.31 and 1,115,891.79
Double scale
Find fourth proportional to 987,639.08, 1,363,052.54 and 557,946.90
Similar ratio
Find fourth proportional to 1,481,457.11, 2,044,576.73 and 836,918.84
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.