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Finding the Fourth Proportional to 568,773.28, 784,900.56 and 310,648.96

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Solution

The fourth proportional to 568,773.28, 784,900.56 and 310,648.96 is: 428,691.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,773.28 : 784,900.56 = 310,648.96 : x
  2. Step 2: Convert to fraction form
    568,773.28/784,900.56 = 310,648.96/x
  3. Step 3: Cross multiply
    568,773.28x = 784,900.56 × 310,648.96
  4. Step 4: Simplify right side
    568,773.28x = 243,828,542,667.42
  5. Step 5: Solve for x
    x = 243,828,542,667.42/568,773.28
  6. Step 6: Final answer
    x = 428,691.98

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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.