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Finding the Fourth Proportional to 8,489,908.80, 12,734,863.20 and 2,424,628.80

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Solution

The fourth proportional to 8,489,908.80, 12,734,863.20 and 2,424,628.80 is: 3,636,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489,908.80 : 12,734,863.20 = 2,424,628.80 : x
  2. Step 2: Convert to fraction form
    8,489,908.80/12,734,863.20 = 2,424,628.80/x
  3. Step 3: Cross multiply
    8,489,908.80x = 12,734,863.20 × 2,424,628.80
  4. Step 4: Simplify right side
    8,489,908.80x = 30,877,316,078,780.16
  5. Step 5: Solve for x
    x = 30,877,316,078,780.16/8,489,908.80
  6. Step 6: Final answer
    x = 3,636,943.20

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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.