Finding the Fourth Proportional to 690,153.76, 952,190.67 and 418,134.70
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Solution
The fourth proportional to 690,153.76, 952,190.67 and 418,134.70 is: 576,891.68
Step by Step Solution
- Step 1: Write the proportion equation
690,153.76 : 952,190.67 = 418,134.70 : x - Step 2: Convert to fraction form
690,153.76/952,190.67 = 418,134.70/x - Step 3: Cross multiply
690,153.76x = 952,190.67 × 418,134.70 - Step 4: Simplify right side
690,153.76x = 398,143,960,143.25 - Step 5: Solve for x
x = 398,143,960,143.25/690,153.76 - Step 6: Final answer
x = 576,891.68
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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.