Home / 419,905,142.10-629,857,713.15-386,743,223.70

Finding the Fourth Proportional to 419,905,142.10, 629,857,713.15 and 386,743,223.70

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Solution

The fourth proportional to 419,905,142.10, 629,857,713.15 and 386,743,223.70 is: 580,114,835.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,142.10 : 629,857,713.15 = 386,743,223.70 : x
  2. Step 2: Convert to fraction form
    419,905,142.10/629,857,713.15 = 386,743,223.70/x
  3. Step 3: Cross multiply
    419,905,142.10x = 629,857,713.15 × 386,743,223.70
  4. Step 4: Simplify right side
    419,905,142.10x = 243,593,202,455,940,864
  5. Step 5: Solve for x
    x = 243,593,202,455,940,864/419,905,142.10
  6. Step 6: Final answer
    x = 580,114,835.55

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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.