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Finding the Fourth Proportional to 629,720.96, 868,989.36 and 343,234.88

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Solution

The fourth proportional to 629,720.96, 868,989.36 and 343,234.88 is: 473,650.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,720.96 : 868,989.36 = 343,234.88 : x
  2. Step 2: Convert to fraction form
    629,720.96/868,989.36 = 343,234.88/x
  3. Step 3: Cross multiply
    629,720.96x = 868,989.36 × 343,234.88
  4. Step 4: Simplify right side
    629,720.96x = 298,267,458,700.88
  5. Step 5: Solve for x
    x = 298,267,458,700.88/629,720.96
  6. Step 6: Final answer
    x = 473,650.20

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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.