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Finding the Fourth Proportional to 858,791.10, 1,200,732.90 and 858,791.10

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Solution

The fourth proportional to 858,791.10, 1,200,732.90 and 858,791.10 is: 1,200,732.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,791.10 : 1,200,732.90 = 858,791.10 : x
  2. Step 2: Convert to fraction form
    858,791.10/1,200,732.90 = 858,791.10/x
  3. Step 3: Cross multiply
    858,791.10x = 1,200,732.90 × 858,791.10
  4. Step 4: Simplify right side
    858,791.10x = 1,031,178,727,997.19
  5. Step 5: Solve for x
    x = 1,031,178,727,997.19/858,791.10
  6. Step 6: Final answer
    x = 1,200,732.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.