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Finding the Fourth Proportional to 917,658.75, 1,375,073.41 and 491,251.16

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Solution

The fourth proportional to 917,658.75, 1,375,073.41 and 491,251.16 is: 736,119.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,658.75 : 1,375,073.41 = 491,251.16 : x
  2. Step 2: Convert to fraction form
    917,658.75/1,375,073.41 = 491,251.16/x
  3. Step 3: Cross multiply
    917,658.75x = 1,375,073.41 × 491,251.16
  4. Step 4: Simplify right side
    917,658.75x = 675,506,401,301.33
  5. Step 5: Solve for x
    x = 675,506,401,301.33/917,658.75
  6. Step 6: Final answer
    x = 736,119.39

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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.