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Finding the Fourth Proportional to 629,585.87, 868,803.12 and 343,099.80

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Solution

The fourth proportional to 629,585.87, 868,803.12 and 343,099.80 is: 473,463.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,585.87 : 868,803.12 = 343,099.80 : x
  2. Step 2: Convert to fraction form
    629,585.87/868,803.12 = 343,099.80/x
  3. Step 3: Cross multiply
    629,585.87x = 868,803.12 × 343,099.80
  4. Step 4: Simplify right side
    629,585.87x = 298,086,176,711.38
  5. Step 5: Solve for x
    x = 298,086,176,711.38/629,585.87
  6. Step 6: Final answer
    x = 473,463.90

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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.