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Finding the Fourth Proportional to 633,120.68, 873,789.72 and 361,126.28

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Solution

The fourth proportional to 633,120.68, 873,789.72 and 361,126.28 is: 498,401.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,120.68 : 873,789.72 = 361,126.28 : x
  2. Step 2: Convert to fraction form
    633,120.68/873,789.72 = 361,126.28/x
  3. Step 3: Cross multiply
    633,120.68x = 873,789.72 × 361,126.28
  4. Step 4: Simplify right side
    633,120.68x = 315,548,431,085.84
  5. Step 5: Solve for x
    x = 315,548,431,085.84/633,120.68
  6. Step 6: Final answer
    x = 498,401.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.