Home / 475,247.12-655,621.19-420,854.73

Finding the Fourth Proportional to 475,247.12, 655,621.19 and 420,854.73

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Solution

The fourth proportional to 475,247.12, 655,621.19 and 420,854.73 is: 580,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,247.12 : 655,621.19 = 420,854.73 : x
  2. Step 2: Convert to fraction form
    475,247.12/655,621.19 = 420,854.73/x
  3. Step 3: Cross multiply
    475,247.12x = 655,621.19 × 420,854.73
  4. Step 4: Simplify right side
    475,247.12x = 275,921,276,795.46
  5. Step 5: Solve for x
    x = 275,921,276,795.46/475,247.12
  6. Step 6: Final answer
    x = 580,584.85

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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.