Finding the Fourth Proportional to 642,539.68, 886,710.01 and 356,064.55
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Solution
The fourth proportional to 642,539.68, 886,710.01 and 356,064.55 is: 491,371.99
Step by Step Solution
- Step 1: Write the proportion equation
642,539.68 : 886,710.01 = 356,064.55 : x - Step 2: Convert to fraction form
642,539.68/886,710.01 = 356,064.55/x - Step 3: Cross multiply
642,539.68x = 886,710.01 × 356,064.55 - Step 4: Simplify right side
642,539.68x = 315,726,000,691.15 - Step 5: Solve for x
x = 315,726,000,691.15/642,539.68 - Step 6: Final answer
x = 491,371.99
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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.