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Finding the Fourth Proportional to 8,491,536.80, 12,738,082.80 and 3,441,802.40

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Solution

The fourth proportional to 8,491,536.80, 12,738,082.80 and 3,441,802.40 is: 5,163,018.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491,536.80 : 12,738,082.80 = 3,441,802.40 : x
  2. Step 2: Convert to fraction form
    8,491,536.80/12,738,082.80 = 3,441,802.40/x
  3. Step 3: Cross multiply
    8,491,536.80x = 12,738,082.80 × 3,441,802.40
  4. Step 4: Simplify right side
    8,491,536.80x = 43,841,963,952,438.72
  5. Step 5: Solve for x
    x = 43,841,963,952,438.72/8,491,536.80
  6. Step 6: Final answer
    x = 5,163,018.78

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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.