Finding the Fourth Proportional to 873,631.76, 1,205,609.36 and 491,658.55
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Solution
The fourth proportional to 873,631.76, 1,205,609.36 and 491,658.55 is: 678,487.41
Step by Step Solution
- Step 1: Write the proportion equation
873,631.76 : 1,205,609.36 = 491,658.55 : x - Step 2: Convert to fraction form
873,631.76/1,205,609.36 = 491,658.55/x - Step 3: Cross multiply
873,631.76x = 1,205,609.36 × 491,658.55 - Step 4: Simplify right side
873,631.76x = 592,748,148,019.15 - Step 5: Solve for x
x = 592,748,148,019.15/873,631.76 - Step 6: Final answer
x = 678,487.41
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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.