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Finding the Fourth Proportional to 8,656,267.80, 12,984,401.70 and 8,287,685.40

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Solution

The fourth proportional to 8,656,267.80, 12,984,401.70 and 8,287,685.40 is: 12,431,528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656,267.80 : 12,984,401.70 = 8,287,685.40 : x
  2. Step 2: Convert to fraction form
    8,656,267.80/12,984,401.70 = 8,287,685.40/x
  3. Step 3: Cross multiply
    8,656,267.80x = 12,984,401.70 × 8,287,685.40
  4. Step 4: Simplify right side
    8,656,267.80x = 107,610,636,396,825.17
  5. Step 5: Solve for x
    x = 107,610,636,396,825.17/8,656,267.80
  6. Step 6: Final answer
    x = 12,431,528.10

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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.