Home / 988,458.78-1,481,626.87-419,359.57

Finding the Fourth Proportional to 988,458.78, 1,481,626.87 and 419,359.57

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Solution

The fourth proportional to 988,458.78, 1,481,626.87 and 419,359.57 is: 628,589.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,458.78 : 1,481,626.87 = 419,359.57 : x
  2. Step 2: Convert to fraction form
    988,458.78/1,481,626.87 = 419,359.57/x
  3. Step 3: Cross multiply
    988,458.78x = 1,481,626.87 × 419,359.57
  4. Step 4: Simplify right side
    988,458.78x = 621,334,407,103.65
  5. Step 5: Solve for x
    x = 621,334,407,103.65/988,458.78
  6. Step 6: Final answer
    x = 628,589.09

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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.