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Finding the Fourth Proportional to 568,406.60, 784,399.45 and 313,755.96

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Solution

The fourth proportional to 568,406.60, 784,399.45 and 313,755.96 is: 432,982.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,406.60 : 784,399.45 = 313,755.96 : x
  2. Step 2: Convert to fraction form
    568,406.60/784,399.45 = 313,755.96/x
  3. Step 3: Cross multiply
    568,406.60x = 784,399.45 × 313,755.96
  4. Step 4: Simplify right side
    568,406.60x = 246,110,002,458.22
  5. Step 5: Solve for x
    x = 246,110,002,458.22/568,406.60
  6. Step 6: Final answer
    x = 432,982.31

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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.