Home / 420,827.34-580,719.87-229,803.42

Finding the Fourth Proportional to 420,827.34, 580,719.87 and 229,803.42

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Solution

The fourth proportional to 420,827.34, 580,719.87 and 229,803.42 is: 317,116.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,827.34 : 580,719.87 = 229,803.42 : x
  2. Step 2: Convert to fraction form
    420,827.34/580,719.87 = 229,803.42/x
  3. Step 3: Cross multiply
    420,827.34x = 580,719.87 × 229,803.42
  4. Step 4: Simplify right side
    420,827.34x = 133,451,412,187.96
  5. Step 5: Solve for x
    x = 133,451,412,187.96/420,827.34
  6. Step 6: Final answer
    x = 317,116.78

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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.