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Finding the Fourth Proportional to 627,711.18, 866,658.32 and 482,257.72

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Solution

The fourth proportional to 627,711.18, 866,658.32 and 482,257.72 is: 665,835.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,711.18 : 866,658.32 = 482,257.72 : x
  2. Step 2: Convert to fraction form
    627,711.18/866,658.32 = 482,257.72/x
  3. Step 3: Cross multiply
    627,711.18x = 866,658.32 × 482,257.72
  4. Step 4: Simplify right side
    627,711.18x = 417,952,665,422.23
  5. Step 5: Solve for x
    x = 417,952,665,422.23/627,711.18
  6. Step 6: Final answer
    x = 665,835.94

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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.