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Finding the Fourth Proportional to 629,564.67, 868,773.95 and 343,078.61

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Solution

The fourth proportional to 629,564.67, 868,773.95 and 343,078.61 is: 473,434.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,564.67 : 868,773.95 = 343,078.61 : x
  2. Step 2: Convert to fraction form
    629,564.67/868,773.95 = 343,078.61/x
  3. Step 3: Cross multiply
    629,564.67x = 868,773.95 × 343,078.61
  4. Step 4: Simplify right side
    629,564.67x = 298,057,753,110.95
  5. Step 5: Solve for x
    x = 298,057,753,110.95/629,564.67
  6. Step 6: Final answer
    x = 473,434.69

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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.