Home / 420,634.12-580,450.44-229,609.12

Finding the Fourth Proportional to 420,634.12, 580,450.44 and 229,609.12

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Solution

The fourth proportional to 420,634.12, 580,450.44 and 229,609.12 is: 316,847.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,634.12 : 580,450.44 = 229,609.12 : x
  2. Step 2: Convert to fraction form
    420,634.12/580,450.44 = 229,609.12/x
  3. Step 3: Cross multiply
    420,634.12x = 580,450.44 × 229,609.12
  4. Step 4: Simplify right side
    420,634.12x = 133,276,714,732.01
  5. Step 5: Solve for x
    x = 133,276,714,732.01/420,634.12
  6. Step 6: Final answer
    x = 316,847.13

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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.