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Finding the Fourth Proportional to 394,929.60, 591,519.60 and 324,945.60

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Solution

The fourth proportional to 394,929.60, 591,519.60 and 324,945.60 is: 486,698.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,929.60 : 591,519.60 = 324,945.60 : x
  2. Step 2: Convert to fraction form
    394,929.60/591,519.60 = 324,945.60/x
  3. Step 3: Cross multiply
    394,929.60x = 591,519.60 × 324,945.60
  4. Step 4: Simplify right side
    394,929.60x = 192,211,691,333.76
  5. Step 5: Solve for x
    x = 192,211,691,333.76/394,929.60
  6. Step 6: Final answer
    x = 486,698.62

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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.