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Finding the Fourth Proportional to 486,689.11, 730,033.66 and 318,350.96

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Solution

The fourth proportional to 486,689.11, 730,033.66 and 318,350.96 is: 477,526.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,689.11 : 730,033.66 = 318,350.96 : x
  2. Step 2: Convert to fraction form
    486,689.11/730,033.66 = 318,350.96/x
  3. Step 3: Cross multiply
    486,689.11x = 730,033.66 × 318,350.96
  4. Step 4: Simplify right side
    486,689.11x = 232,406,915,978.71
  5. Step 5: Solve for x
    x = 232,406,915,978.71/486,689.11
  6. Step 6: Final answer
    x = 477,526.44

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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.