Home / 820,499.22-1,230,793.63-259,491.86

Finding the Fourth Proportional to 820,499.22, 1,230,793.63 and 259,491.86

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Solution

The fourth proportional to 820,499.22, 1,230,793.63 and 259,491.86 is: 389,251.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,499.22 : 1,230,793.63 = 259,491.86 : x
  2. Step 2: Convert to fraction form
    820,499.22/1,230,793.63 = 259,491.86/x
  3. Step 3: Cross multiply
    820,499.22x = 1,230,793.63 × 259,491.86
  4. Step 4: Simplify right side
    820,499.22x = 319,380,928,324.85
  5. Step 5: Solve for x
    x = 319,380,928,324.85/820,499.22
  6. Step 6: Final answer
    x = 389,251.96

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1.5x scale

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.