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Finding the Fourth Proportional to 8,869,658.20, 13,304,487.30 and 4,086,689.20

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Solution

The fourth proportional to 8,869,658.20, 13,304,487.30 and 4,086,689.20 is: 6,130,033.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869,658.20 : 13,304,487.30 = 4,086,689.20 : x
  2. Step 2: Convert to fraction form
    8,869,658.20/13,304,487.30 = 4,086,689.20/x
  3. Step 3: Cross multiply
    8,869,658.20x = 13,304,487.30 × 4,086,689.20
  4. Step 4: Simplify right side
    8,869,658.20x = 54,371,304,560,447.16
  5. Step 5: Solve for x
    x = 54,371,304,560,447.16/8,869,658.20
  6. Step 6: Final answer
    x = 6,130,033.80

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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.