Home / 419,904,458.40-629,856,687.60-215,453,200.80

Finding the Fourth Proportional to 419,904,458.40, 629,856,687.60 and 215,453,200.80

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Solution

The fourth proportional to 419,904,458.40, 629,856,687.60 and 215,453,200.80 is: 323,179,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,458.40 : 629,856,687.60 = 215,453,200.80 : x
  2. Step 2: Convert to fraction form
    419,904,458.40/629,856,687.60 = 215,453,200.80/x
  3. Step 3: Cross multiply
    419,904,458.40x = 629,856,687.60 × 215,453,200.80
  4. Step 4: Simplify right side
    419,904,458.40x = 135,704,639,388,705,680
  5. Step 5: Solve for x
    x = 135,704,639,388,705,680/419,904,458.40
  6. Step 6: Final answer
    x = 323,179,801.20

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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.