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Finding the Fourth Proportional to 616,534.56, 850,791.60 and 387,211.68

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Solution

The fourth proportional to 616,534.56, 850,791.60 and 387,211.68 is: 534,335.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,534.56 : 850,791.60 = 387,211.68 : x
  2. Step 2: Convert to fraction form
    616,534.56/850,791.60 = 387,211.68/x
  3. Step 3: Cross multiply
    616,534.56x = 850,791.60 × 387,211.68
  4. Step 4: Simplify right side
    616,534.56x = 329,436,444,765.89
  5. Step 5: Solve for x
    x = 329,436,444,765.89/616,534.56
  6. Step 6: Final answer
    x = 534,335.73

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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.