Finding the Fourth Proportional to 690,154.26, 952,191.36 and 418,135.20
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Solution
The fourth proportional to 690,154.26, 952,191.36 and 418,135.20 is: 576,892.37
Step by Step Solution
- Step 1: Write the proportion equation
690,154.26 : 952,191.36 = 418,135.20 : x - Step 2: Convert to fraction form
690,154.26/952,191.36 = 418,135.20/x - Step 3: Cross multiply
690,154.26x = 952,191.36 × 418,135.20 - Step 4: Simplify right side
690,154.26x = 398,144,724,751.87 - Step 5: Solve for x
x = 398,144,724,751.87/690,154.26 - Step 6: Final answer
x = 576,892.37
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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.