Home / 420,704.74-580,570.23-229,716.78

Finding the Fourth Proportional to 420,704.74, 580,570.23 and 229,716.78

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Solution

The fourth proportional to 420,704.74, 580,570.23 and 229,716.78 is: 317,007.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,704.74 : 580,570.23 = 229,716.78 : x
  2. Step 2: Convert to fraction form
    420,704.74/580,570.23 = 229,716.78/x
  3. Step 3: Cross multiply
    420,704.74x = 580,570.23 × 229,716.78
  4. Step 4: Simplify right side
    420,704.74x = 133,366,723,799.46
  5. Step 5: Solve for x
    x = 133,366,723,799.46/420,704.74
  6. Step 6: Final answer
    x = 317,007.89

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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.