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Finding the Fourth Proportional to 629,624.95, 868,857.13 and 343,138.88

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Solution

The fourth proportional to 629,624.95, 868,857.13 and 343,138.88 is: 473,517.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,624.95 : 868,857.13 = 343,138.88 : x
  2. Step 2: Convert to fraction form
    629,624.95/868,857.13 = 343,138.88/x
  3. Step 3: Cross multiply
    629,624.95x = 868,857.13 × 343,138.88
  4. Step 4: Simplify right side
    629,624.95x = 298,138,665,069.28
  5. Step 5: Solve for x
    x = 298,138,665,069.28/629,624.95
  6. Step 6: Final answer
    x = 473,517.87

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1.5x scale

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.