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Finding the Fourth Proportional to 587,105.20, 810,453.24 and 396,376.96

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Solution

The fourth proportional to 587,105.20, 810,453.24 and 396,376.96 is: 547,167.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,105.20 : 810,453.24 = 396,376.96 : x
  2. Step 2: Convert to fraction form
    587,105.20/810,453.24 = 396,376.96/x
  3. Step 3: Cross multiply
    587,105.20x = 810,453.24 × 396,376.96
  4. Step 4: Simplify right side
    587,105.20x = 321,244,991,493.35
  5. Step 5: Solve for x
    x = 321,244,991,493.35/587,105.20
  6. Step 6: Final answer
    x = 547,167.68

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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.