Home / 488,039.30-731,949.60-320,733.80

Finding the Fourth Proportional to 488,039.30, 731,949.60 and 320,733.80

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Solution

The fourth proportional to 488,039.30, 731,949.60 and 320,733.80 is: 481,028.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,039.30 : 731,949.60 = 320,733.80 : x
  2. Step 2: Convert to fraction form
    488,039.30/731,949.60 = 320,733.80/x
  3. Step 3: Cross multiply
    488,039.30x = 731,949.60 × 320,733.80
  4. Step 4: Simplify right side
    488,039.30x = 234,760,976,616.48
  5. Step 5: Solve for x
    x = 234,760,976,616.48/488,039.30
  6. Step 6: Final answer
    x = 481,028.84

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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.