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Finding the Fourth Proportional to 568,634.40, 784,431.90 and 339,029.73

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Solution

The fourth proportional to 568,634.40, 784,431.90 and 339,029.73 is: 467,691.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,634.40 : 784,431.90 = 339,029.73 : x
  2. Step 2: Convert to fraction form
    568,634.40/784,431.90 = 339,029.73/x
  3. Step 3: Cross multiply
    568,634.40x = 784,431.90 × 339,029.73
  4. Step 4: Simplify right side
    568,634.40x = 265,945,735,260.39
  5. Step 5: Solve for x
    x = 265,945,735,260.39/568,634.40
  6. Step 6: Final answer
    x = 467,691.96

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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.