Home / 420,778.60-580,679.09-229,797.61

Finding the Fourth Proportional to 420,778.60, 580,679.09 and 229,797.61

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Solution

The fourth proportional to 420,778.60, 580,679.09 and 229,797.61 is: 317,123.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,778.60 : 580,679.09 = 229,797.61 : x
  2. Step 2: Convert to fraction form
    420,778.60/580,679.09 = 229,797.61/x
  3. Step 3: Cross multiply
    420,778.60x = 580,679.09 × 229,797.61
  4. Step 4: Simplify right side
    420,778.60x = 133,438,667,058.98
  5. Step 5: Solve for x
    x = 133,438,667,058.98/420,778.60
  6. Step 6: Final answer
    x = 317,123.23

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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.