Home / 419,904,793.60-629,857,190.40-394,374,630.40

Finding the Fourth Proportional to 419,904,793.60, 629,857,190.40 and 394,374,630.40

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Solution

The fourth proportional to 419,904,793.60, 629,857,190.40 and 394,374,630.40 is: 591,561,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,793.60 : 629,857,190.40 = 394,374,630.40 : x
  2. Step 2: Convert to fraction form
    419,904,793.60/629,857,190.40 = 394,374,630.40/x
  3. Step 3: Cross multiply
    419,904,793.60x = 629,857,190.40 × 394,374,630.40
  4. Step 4: Simplify right side
    419,904,793.60x = 248,399,696,668,782,400
  5. Step 5: Solve for x
    x = 248,399,696,668,782,400/419,904,793.60
  6. Step 6: Final answer
    x = 591,561,945.60

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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.