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Finding the Fourth Proportional to 629,660.12, 868,949.17 and 343,198.76

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Solution

The fourth proportional to 629,660.12, 868,949.17 and 343,198.76 is: 473,624.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,660.12 : 868,949.17 = 343,198.76 : x
  2. Step 2: Convert to fraction form
    629,660.12/868,949.17 = 343,198.76/x
  3. Step 3: Cross multiply
    629,660.12x = 868,949.17 × 343,198.76
  4. Step 4: Simplify right side
    629,660.12x = 298,222,272,444.29
  5. Step 5: Solve for x
    x = 298,222,272,444.29/629,660.12
  6. Step 6: Final answer
    x = 473,624.21

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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.