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Finding the Fourth Proportional to 629,589.11, 868,745.31 and 353,907.98

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Solution

The fourth proportional to 629,589.11, 868,745.31 and 353,907.98 is: 488,343.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,589.11 : 868,745.31 = 353,907.98 : x
  2. Step 2: Convert to fraction form
    629,589.11/868,745.31 = 353,907.98/x
  3. Step 3: Cross multiply
    629,589.11x = 868,745.31 × 353,907.98
  4. Step 4: Simplify right side
    629,589.11x = 307,455,893,452.85
  5. Step 5: Solve for x
    x = 307,455,893,452.85/629,589.11
  6. Step 6: Final answer
    x = 488,343.73

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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.