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Finding the Fourth Proportional to 619,247.80, 927,489.30 and 478,550.20

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Solution

The fourth proportional to 619,247.80, 927,489.30 and 478,550.20 is: 716,756.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,247.80 : 927,489.30 = 478,550.20 : x
  2. Step 2: Convert to fraction form
    619,247.80/927,489.30 = 478,550.20/x
  3. Step 3: Cross multiply
    619,247.80x = 927,489.30 × 478,550.20
  4. Step 4: Simplify right side
    619,247.80x = 443,850,190,012.86
  5. Step 5: Solve for x
    x = 443,850,190,012.86/619,247.80
  6. Step 6: Final answer
    x = 716,756.99

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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.