Finding the Fourth Proportional to 987,385.75, 1,481,083.49 and 239,431.75
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Solution
The fourth proportional to 987,385.75, 1,481,083.49 and 239,431.75 is: 359,148.80
Step by Step Solution
- Step 1: Write the proportion equation
987,385.75 : 1,481,083.49 = 239,431.75 : x - Step 2: Convert to fraction form
987,385.75/1,481,083.49 = 239,431.75/x - Step 3: Cross multiply
987,385.75x = 1,481,083.49 × 239,431.75 - Step 4: Simplify right side
987,385.75x = 354,618,411,906.81 - Step 5: Solve for x
x = 354,618,411,906.81/987,385.75 - Step 6: Final answer
x = 359,148.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.