Home / 442,916.80-664,375.20-419,588.80

Finding the Fourth Proportional to 442,916.80, 664,375.20 and 419,588.80

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Solution

The fourth proportional to 442,916.80, 664,375.20 and 419,588.80 is: 629,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,916.80 : 664,375.20 = 419,588.80 : x
  2. Step 2: Convert to fraction form
    442,916.80/664,375.20 = 419,588.80/x
  3. Step 3: Cross multiply
    442,916.80x = 664,375.20 × 419,588.80
  4. Step 4: Simplify right side
    442,916.80x = 278,764,392,917.76
  5. Step 5: Solve for x
    x = 278,764,392,917.76/442,916.80
  6. Step 6: Final answer
    x = 629,383.20

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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.