Home / 420,610.19-580,439.07-229,623.57

Finding the Fourth Proportional to 420,610.19, 580,439.07 and 229,623.57

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Solution

The fourth proportional to 420,610.19, 580,439.07 and 229,623.57 is: 316,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,610.19 : 580,439.07 = 229,623.57 : x
  2. Step 2: Convert to fraction form
    420,610.19/580,439.07 = 229,623.57/x
  3. Step 3: Cross multiply
    420,610.19x = 580,439.07 × 229,623.57
  4. Step 4: Simplify right side
    420,610.19x = 133,282,491,420.88
  5. Step 5: Solve for x
    x = 133,282,491,420.88/420,610.19
  6. Step 6: Final answer
    x = 316,878.90

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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.