Home / 418,971.53-628,769.09-205,853.85

Finding the Fourth Proportional to 418,971.53, 628,769.09 and 205,853.85

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Solution

The fourth proportional to 418,971.53, 628,769.09 and 205,853.85 is: 308,933.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,971.53 : 628,769.09 = 205,853.85 : x
  2. Step 2: Convert to fraction form
    418,971.53/628,769.09 = 205,853.85/x
  3. Step 3: Cross multiply
    418,971.53x = 628,769.09 × 205,853.85
  4. Step 4: Simplify right side
    418,971.53x = 129,434,538,452.13
  5. Step 5: Solve for x
    x = 129,434,538,452.13/418,971.53
  6. Step 6: Final answer
    x = 308,933.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.