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Finding the Fourth Proportional to 482,879.80, 724,902.90 and 479,380.60

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Solution

The fourth proportional to 482,879.80, 724,902.90 and 479,380.60 is: 719,649.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,879.80 : 724,902.90 = 479,380.60 : x
  2. Step 2: Convert to fraction form
    482,879.80/724,902.90 = 479,380.60/x
  3. Step 3: Cross multiply
    482,879.80x = 724,902.90 × 479,380.60
  4. Step 4: Simplify right side
    482,879.80x = 347,504,387,143.74
  5. Step 5: Solve for x
    x = 347,504,387,143.74/482,879.80
  6. Step 6: Final answer
    x = 719,649.87

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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.