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Finding the Fourth Proportional to 627,484.34, 865,961.61 and 355,605.14

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Solution

The fourth proportional to 627,484.34, 865,961.61 and 355,605.14 is: 490,753.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,484.34 : 865,961.61 = 355,605.14 : x
  2. Step 2: Convert to fraction form
    627,484.34/865,961.61 = 355,605.14/x
  3. Step 3: Cross multiply
    627,484.34x = 865,961.61 × 355,605.14
  4. Step 4: Simplify right side
    627,484.34x = 307,940,399,558.68
  5. Step 5: Solve for x
    x = 307,940,399,558.68/627,484.34
  6. Step 6: Final answer
    x = 490,753.92

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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.