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Finding the Fourth Proportional to 479,481.54, 719,346.87 and 394,232.91

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Solution

The fourth proportional to 479,481.54, 719,346.87 and 394,232.91 is: 591,451.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,481.54 : 719,346.87 = 394,232.91 : x
  2. Step 2: Convert to fraction form
    479,481.54/719,346.87 = 394,232.91/x
  3. Step 3: Cross multiply
    479,481.54x = 719,346.87 × 394,232.91
  4. Step 4: Simplify right side
    479,481.54x = 283,590,209,859.49
  5. Step 5: Solve for x
    x = 283,590,209,859.49/479,481.54
  6. Step 6: Final answer
    x = 591,451.78

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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.