Home / 419,710.24-629,380.08-120,122.56

Finding the Fourth Proportional to 419,710.24, 629,380.08 and 120,122.56

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Solution

The fourth proportional to 419,710.24, 629,380.08 and 120,122.56 is: 180,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,710.24 : 629,380.08 = 120,122.56 : x
  2. Step 2: Convert to fraction form
    419,710.24/629,380.08 = 120,122.56/x
  3. Step 3: Cross multiply
    419,710.24x = 629,380.08 × 120,122.56
  4. Step 4: Simplify right side
    419,710.24x = 75,602,746,422.60
  5. Step 5: Solve for x
    x = 75,602,746,422.60/419,710.24
  6. Step 6: Final answer
    x = 180,130.81

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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.