Home / 419,905,049.40-629,857,574.10-215,453,791.80

Finding the Fourth Proportional to 419,905,049.40, 629,857,574.10 and 215,453,791.80

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Solution

The fourth proportional to 419,905,049.40, 629,857,574.10 and 215,453,791.80 is: 323,180,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,049.40 : 629,857,574.10 = 215,453,791.80 : x
  2. Step 2: Convert to fraction form
    419,905,049.40/629,857,574.10 = 215,453,791.80/x
  3. Step 3: Cross multiply
    419,905,049.40x = 629,857,574.10 × 215,453,791.80
  4. Step 4: Simplify right side
    419,905,049.40x = 135,705,202,633,794,480
  5. Step 5: Solve for x
    x = 135,705,202,633,794,480/419,905,049.40
  6. Step 6: Final answer
    x = 323,180,687.70

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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.