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Finding the Fourth Proportional to 8,491,540.80, 12,738,088.80 and 3,441,806.40

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Solution

The fourth proportional to 8,491,540.80, 12,738,088.80 and 3,441,806.40 is: 5,163,024.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491,540.80 : 12,738,088.80 = 3,441,806.40 : x
  2. Step 2: Convert to fraction form
    8,491,540.80/12,738,088.80 = 3,441,806.40/x
  3. Step 3: Cross multiply
    8,491,540.80x = 12,738,088.80 × 3,441,806.40
  4. Step 4: Simplify right side
    8,491,540.80x = 43,842,035,555,608.32
  5. Step 5: Solve for x
    x = 43,842,035,555,608.32/8,491,540.80
  6. Step 6: Final answer
    x = 5,163,024.78

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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.