Home / 419,934.37-629,912.49-120,402.85

Finding the Fourth Proportional to 419,934.37, 629,912.49 and 120,402.85

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Solution

The fourth proportional to 419,934.37, 629,912.49 and 120,402.85 is: 180,607.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,934.37 : 629,912.49 = 120,402.85 : x
  2. Step 2: Convert to fraction form
    419,934.37/629,912.49 = 120,402.85/x
  3. Step 3: Cross multiply
    419,934.37x = 629,912.49 × 120,402.85
  4. Step 4: Simplify right side
    419,934.37x = 75,843,259,046.60
  5. Step 5: Solve for x
    x = 75,843,259,046.60/419,934.37
  6. Step 6: Final answer
    x = 180,607.41

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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.