Finding the Fourth Proportional to 686,517.13, 1,029,843.95 and 254,350.21
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Solution
The fourth proportional to 686,517.13, 1,029,843.95 and 254,350.21 is: 381,550.60
Step by Step Solution
- Step 1: Write the proportion equation
686,517.13 : 1,029,843.95 = 254,350.21 : x - Step 2: Convert to fraction form
686,517.13/1,029,843.95 = 254,350.21/x - Step 3: Cross multiply
686,517.13x = 1,029,843.95 × 254,350.21 - Step 4: Simplify right side
686,517.13x = 261,941,024,949.73 - Step 5: Solve for x
x = 261,941,024,949.73/686,517.13 - Step 6: Final answer
x = 381,550.60
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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.