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Finding the Fourth Proportional to 629,763.10, 869,040.20 and 357,793.22

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Solution

The fourth proportional to 629,763.10, 869,040.20 and 357,793.22 is: 493,735.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,763.10 : 869,040.20 = 357,793.22 : x
  2. Step 2: Convert to fraction form
    629,763.10/869,040.20 = 357,793.22/x
  3. Step 3: Cross multiply
    629,763.10x = 869,040.20 × 357,793.22
  4. Step 4: Simplify right side
    629,763.10x = 310,936,691,467.44
  5. Step 5: Solve for x
    x = 310,936,691,467.44/629,763.10
  6. Step 6: Final answer
    x = 493,735.96

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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.