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Finding the Fourth Proportional to 568,286.78, 784,337.44 and 338,858.86

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Solution

The fourth proportional to 568,286.78, 784,337.44 and 338,858.86 is: 467,685.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,286.78 : 784,337.44 = 338,858.86 : x
  2. Step 2: Convert to fraction form
    568,286.78/784,337.44 = 338,858.86/x
  3. Step 3: Cross multiply
    568,286.78x = 784,337.44 × 338,858.86
  4. Step 4: Simplify right side
    568,286.78x = 265,779,690,773.72
  5. Step 5: Solve for x
    x = 265,779,690,773.72/568,286.78
  6. Step 6: Final answer
    x = 467,685.86

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Double scale
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1.5x scale

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.