Home / 1,226.60-1,839.26-404.78

Finding the Fourth Proportional to 1,226.60, 1,839.26 and 404.78

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Solution

The fourth proportional to 1,226.60, 1,839.26 and 404.78 is: 606.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.60 : 1,839.26 = 404.78 : x
  2. Step 2: Convert to fraction form
    1,226.60/1,839.26 = 404.78/x
  3. Step 3: Cross multiply
    1,226.60x = 1,839.26 × 404.78
  4. Step 4: Simplify right side
    1,226.60x = 744,495.66
  5. Step 5: Solve for x
    x = 744,495.66/1,226.60
  6. Step 6: Final answer
    x = 606.96

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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.