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Finding the Fourth Proportional to 615,930.64, 925,536.21 and 331,839.34

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Solution

The fourth proportional to 615,930.64, 925,536.21 and 331,839.34 is: 498,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,930.64 : 925,536.21 = 331,839.34 : x
  2. Step 2: Convert to fraction form
    615,930.64/925,536.21 = 331,839.34/x
  3. Step 3: Cross multiply
    615,930.64x = 925,536.21 × 331,839.34
  4. Step 4: Simplify right side
    615,930.64x = 307,129,325,072.50
  5. Step 5: Solve for x
    x = 307,129,325,072.50/615,930.64
  6. Step 6: Final answer
    x = 498,642.71

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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.