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Finding the Fourth Proportional to 8,394,387.80, 12,591,581.70 and 8,207,763.80

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Solution

The fourth proportional to 8,394,387.80, 12,591,581.70 and 8,207,763.80 is: 12,311,645.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394,387.80 : 12,591,581.70 = 8,207,763.80 : x
  2. Step 2: Convert to fraction form
    8,394,387.80/12,591,581.70 = 8,207,763.80/x
  3. Step 3: Cross multiply
    8,394,387.80x = 12,591,581.70 × 8,207,763.80
  4. Step 4: Simplify right side
    8,394,387.80x = 103,348,728,462,002.45
  5. Step 5: Solve for x
    x = 103,348,728,462,002.45/8,394,387.80
  6. Step 6: Final answer
    x = 12,311,645.70

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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.