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Finding the Fourth Proportional to 1,942,375.10, 2,912,687.85 and 743,899.10

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Solution

The fourth proportional to 1,942,375.10, 2,912,687.85 and 743,899.10 is: 1,115,513.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942,375.10 : 2,912,687.85 = 743,899.10 : x
  2. Step 2: Convert to fraction form
    1,942,375.10/2,912,687.85 = 743,899.10/x
  3. Step 3: Cross multiply
    1,942,375.10x = 2,912,687.85 × 743,899.10
  4. Step 4: Simplify right side
    1,942,375.10x = 2,166,745,870,195.94
  5. Step 5: Solve for x
    x = 2,166,745,870,195.94/1,942,375.10
  6. Step 6: Final answer
    x = 1,115,513.62

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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.