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Finding the Fourth Proportional to 629,993.88, 869,372.52 and 343,519.56

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Solution

The fourth proportional to 629,993.88, 869,372.52 and 343,519.56 is: 474,046.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,993.88 : 869,372.52 = 343,519.56 : x
  2. Step 2: Convert to fraction form
    629,993.88/869,372.52 = 343,519.56/x
  3. Step 3: Cross multiply
    629,993.88x = 869,372.52 × 343,519.56
  4. Step 4: Simplify right side
    629,993.88x = 298,646,465,546.49
  5. Step 5: Solve for x
    x = 298,646,465,546.49/629,993.88
  6. Step 6: Final answer
    x = 474,046.61

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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.