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Finding the Fourth Proportional to 629,441.72, 868,605.16 and 342,963.96

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Solution

The fourth proportional to 629,441.72, 868,605.16 and 342,963.96 is: 473,276.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,441.72 : 868,605.16 = 342,963.96 : x
  2. Step 2: Convert to fraction form
    629,441.72/868,605.16 = 342,963.96/x
  3. Step 3: Cross multiply
    629,441.72x = 868,605.16 × 342,963.96
  4. Step 4: Simplify right side
    629,441.72x = 297,900,265,350.03
  5. Step 5: Solve for x
    x = 297,900,265,350.03/629,441.72
  6. Step 6: Final answer
    x = 473,276.96

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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.