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Finding the Fourth Proportional to 8,599,359.65, 12,899,491.45 and 2,209,655.21

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Solution

The fourth proportional to 8,599,359.65, 12,899,491.45 and 2,209,655.21 is: 3,314,598.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599,359.65 : 12,899,491.45 = 2,209,655.21 : x
  2. Step 2: Convert to fraction form
    8,599,359.65/12,899,491.45 = 2,209,655.21/x
  3. Step 3: Cross multiply
    8,599,359.65x = 12,899,491.45 × 2,209,655.21
  4. Step 4: Simplify right side
    8,599,359.65x = 28,503,428,418,821.36
  5. Step 5: Solve for x
    x = 28,503,428,418,821.36/8,599,359.65
  6. Step 6: Final answer
    x = 3,314,598.95

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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.