Home / 442,914.80-664,372.20-419,586.80

Finding the Fourth Proportional to 442,914.80, 664,372.20 and 419,586.80

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Solution

The fourth proportional to 442,914.80, 664,372.20 and 419,586.80 is: 629,380.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,914.80 : 664,372.20 = 419,586.80 : x
  2. Step 2: Convert to fraction form
    442,914.80/664,372.20 = 419,586.80/x
  3. Step 3: Cross multiply
    442,914.80x = 664,372.20 × 419,586.80
  4. Step 4: Simplify right side
    442,914.80x = 278,761,805,406.96
  5. Step 5: Solve for x
    x = 278,761,805,406.96/442,914.80
  6. Step 6: Final answer
    x = 629,380.20

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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.