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Finding the Fourth Proportional to 488,049.80, 730,908.30 and 394,737.80

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Solution

The fourth proportional to 488,049.80, 730,908.30 and 394,737.80 is: 591,163.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,049.80 : 730,908.30 = 394,737.80 : x
  2. Step 2: Convert to fraction form
    488,049.80/730,908.30 = 394,737.80/x
  3. Step 3: Cross multiply
    488,049.80x = 730,908.30 × 394,737.80
  4. Step 4: Simplify right side
    488,049.80x = 288,517,134,343.74
  5. Step 5: Solve for x
    x = 288,517,134,343.74/488,049.80
  6. Step 6: Final answer
    x = 591,163.31

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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.