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Finding the Fourth Proportional to 629,382.66, 868,517.85 and 357,414.63

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Solution

The fourth proportional to 629,382.66, 868,517.85 and 357,414.63 is: 493,215.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,382.66 : 868,517.85 = 357,414.63 : x
  2. Step 2: Convert to fraction form
    629,382.66/868,517.85 = 357,414.63/x
  3. Step 3: Cross multiply
    629,382.66x = 868,517.85 × 357,414.63
  4. Step 4: Simplify right side
    629,382.66x = 310,420,986,006.15
  5. Step 5: Solve for x
    x = 310,420,986,006.15/629,382.66
  6. Step 6: Final answer
    x = 493,215.03

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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.