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Finding the Fourth Proportional to 568,372.64, 784,354.32 and 313,723.92

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Solution

The fourth proportional to 568,372.64, 784,354.32 and 313,723.92 is: 432,939.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,372.64 : 784,354.32 = 313,723.92 : x
  2. Step 2: Convert to fraction form
    568,372.64/784,354.32 = 313,723.92/x
  3. Step 3: Cross multiply
    568,372.64x = 784,354.32 × 313,723.92
  4. Step 4: Simplify right side
    568,372.64x = 246,070,711,939.33
  5. Step 5: Solve for x
    x = 246,070,711,939.33/568,372.64
  6. Step 6: Final answer
    x = 432,939.05

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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.