Home / 721,933.31-996,279.76-395,240.85

Finding the Fourth Proportional to 721,933.31, 996,279.76 and 395,240.85

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Solution

The fourth proportional to 721,933.31, 996,279.76 and 395,240.85 is: 545,438.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,933.31 : 996,279.76 = 395,240.85 : x
  2. Step 2: Convert to fraction form
    721,933.31/996,279.76 = 395,240.85/x
  3. Step 3: Cross multiply
    721,933.31x = 996,279.76 × 395,240.85
  4. Step 4: Simplify right side
    721,933.31x = 393,770,459,180.20
  5. Step 5: Solve for x
    x = 393,770,459,180.20/721,933.31
  6. Step 6: Final answer
    x = 545,438.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.