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Finding the Fourth Proportional to 488,048.80, 730,906.80 and 394,736.80

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Solution

The fourth proportional to 488,048.80, 730,906.80 and 394,736.80 is: 591,161.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,048.80 : 730,906.80 = 394,736.80 : x
  2. Step 2: Convert to fraction form
    488,048.80/730,906.80 = 394,736.80/x
  3. Step 3: Cross multiply
    488,048.80x = 730,906.80 × 394,736.80
  4. Step 4: Simplify right side
    488,048.80x = 288,515,811,330.24
  5. Step 5: Solve for x
    x = 288,515,811,330.24/488,048.80
  6. Step 6: Final answer
    x = 591,161.81

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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.