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Finding the Fourth Proportional to 2,978,834.40, 4,468,424.40 and 849,074.40

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Solution

The fourth proportional to 2,978,834.40, 4,468,424.40 and 849,074.40 is: 1,273,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978,834.40 : 4,468,424.40 = 849,074.40 : x
  2. Step 2: Convert to fraction form
    2,978,834.40/4,468,424.40 = 849,074.40/x
  3. Step 3: Cross multiply
    2,978,834.40x = 4,468,424.40 × 849,074.40
  4. Step 4: Simplify right side
    2,978,834.40x = 3,794,024,766,375.36
  5. Step 5: Solve for x
    x = 3,794,024,766,375.36/2,978,834.40
  6. Step 6: Final answer
    x = 1,273,660.85

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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.