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Finding the Fourth Proportional to 8,278,402.80, 12,431,773.80 and 4,499,266.80

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Solution

The fourth proportional to 8,278,402.80, 12,431,773.80 and 4,499,266.80 is: 6,756,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278,402.80 : 12,431,773.80 = 4,499,266.80 : x
  2. Step 2: Convert to fraction form
    8,278,402.80/12,431,773.80 = 4,499,266.80/x
  3. Step 3: Cross multiply
    8,278,402.80x = 12,431,773.80 × 4,499,266.80
  4. Step 4: Simplify right side
    8,278,402.80x = 55,933,867,123,449.84
  5. Step 5: Solve for x
    x = 55,933,867,123,449.84/8,278,402.80
  6. Step 6: Final answer
    x = 6,756,601.30

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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.