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Finding the Fourth Proportional to 579,909.78, 869,150.79 and 276,463.80

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Solution

The fourth proportional to 579,909.78, 869,150.79 and 276,463.80 is: 414,355.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,909.78 : 869,150.79 = 276,463.80 : x
  2. Step 2: Convert to fraction form
    579,909.78/869,150.79 = 276,463.80/x
  3. Step 3: Cross multiply
    579,909.78x = 869,150.79 × 276,463.80
  4. Step 4: Simplify right side
    579,909.78x = 240,288,730,176.40
  5. Step 5: Solve for x
    x = 240,288,730,176.40/579,909.78
  6. Step 6: Final answer
    x = 414,355.37

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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.