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Finding the Fourth Proportional to 479,865.60, 718,761.60 and 396,921.60

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Solution

The fourth proportional to 479,865.60, 718,761.60 and 396,921.60 is: 594,524.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,865.60 : 718,761.60 = 396,921.60 : x
  2. Step 2: Convert to fraction form
    479,865.60/718,761.60 = 396,921.60/x
  3. Step 3: Cross multiply
    479,865.60x = 718,761.60 × 396,921.60
  4. Step 4: Simplify right side
    479,865.60x = 285,292,004,290.56
  5. Step 5: Solve for x
    x = 285,292,004,290.56/479,865.60
  6. Step 6: Final answer
    x = 594,524.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.