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Finding the Fourth Proportional to 629,234.80, 943,487.68 and 429,796.20

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Solution

The fourth proportional to 629,234.80, 943,487.68 and 429,796.20 is: 644,445.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,234.80 : 943,487.68 = 429,796.20 : x
  2. Step 2: Convert to fraction form
    629,234.80/943,487.68 = 429,796.20/x
  3. Step 3: Cross multiply
    629,234.80x = 943,487.68 × 429,796.20
  4. Step 4: Simplify right side
    629,234.80x = 405,507,419,610.82
  5. Step 5: Solve for x
    x = 405,507,419,610.82/629,234.80
  6. Step 6: Final answer
    x = 644,445.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.