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Finding the Fourth Proportional to 629,616.62, 868,873.92 and 357,699.43

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Solution

The fourth proportional to 629,616.62, 868,873.92 and 357,699.43 is: 493,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,616.62 : 868,873.92 = 357,699.43 : x
  2. Step 2: Convert to fraction form
    629,616.62/868,873.92 = 357,699.43/x
  3. Step 3: Cross multiply
    629,616.62x = 868,873.92 × 357,699.43
  4. Step 4: Simplify right side
    629,616.62x = 310,795,705,925.87
  5. Step 5: Solve for x
    x = 310,795,705,925.87/629,616.62
  6. Step 6: Final answer
    x = 493,626.91

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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.