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Finding the Fourth Proportional to 8,963,572.80, 13,443,609.60 and 2,979,940.80

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Solution

The fourth proportional to 8,963,572.80, 13,443,609.60 and 2,979,940.80 is: 4,469,329.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963,572.80 : 13,443,609.60 = 2,979,940.80 : x
  2. Step 2: Convert to fraction form
    8,963,572.80/13,443,609.60 = 2,979,940.80/x
  3. Step 3: Cross multiply
    8,963,572.80x = 13,443,609.60 × 2,979,940.80
  4. Step 4: Simplify right side
    8,963,572.80x = 40,061,160,746,311.68
  5. Step 5: Solve for x
    x = 40,061,160,746,311.68/8,963,572.80
  6. Step 6: Final answer
    x = 4,469,329.55

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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.