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Finding the Fourth Proportional to 629,593.10, 868,839.12 and 343,113.42

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Solution

The fourth proportional to 629,593.10, 868,839.12 and 343,113.42 is: 473,496.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,593.10 : 868,839.12 = 343,113.42 : x
  2. Step 2: Convert to fraction form
    629,593.10/868,839.12 = 343,113.42/x
  3. Step 3: Cross multiply
    629,593.10x = 868,839.12 × 343,113.42
  4. Step 4: Simplify right side
    629,593.10x = 298,110,361,892.99
  5. Step 5: Solve for x
    x = 298,110,361,892.99/629,593.10
  6. Step 6: Final answer
    x = 473,496.87

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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.