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Finding the Fourth Proportional to 8,341,791.40, 12,491,691.90 and 5,486,444.20

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Solution

The fourth proportional to 8,341,791.40, 12,491,691.90 and 5,486,444.20 is: 8,215,857.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,341,791.40 : 12,491,691.90 = 5,486,444.20 : x
  2. Step 2: Convert to fraction form
    8,341,791.40/12,491,691.90 = 5,486,444.20/x
  3. Step 3: Cross multiply
    8,341,791.40x = 12,491,691.90 × 5,486,444.20
  4. Step 4: Simplify right side
    8,341,791.40x = 68,534,970,572,941.98
  5. Step 5: Solve for x
    x = 68,534,970,572,941.98/8,341,791.40
  6. Step 6: Final answer
    x = 8,215,857.64

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.