Home / 419,931.03-629,711.25-120,343.62

Finding the Fourth Proportional to 419,931.03, 629,711.25 and 120,343.62

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Solution

The fourth proportional to 419,931.03, 629,711.25 and 120,343.62 is: 180,462.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,931.03 : 629,711.25 = 120,343.62 : x
  2. Step 2: Convert to fraction form
    419,931.03/629,711.25 = 120,343.62/x
  3. Step 3: Cross multiply
    419,931.03x = 629,711.25 × 120,343.62
  4. Step 4: Simplify right side
    419,931.03x = 75,781,733,289.85
  5. Step 5: Solve for x
    x = 75,781,733,289.85/419,931.03
  6. Step 6: Final answer
    x = 180,462.33

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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.