Home / 419,904,560.60-629,856,840.90-392,694,781.40

Finding the Fourth Proportional to 419,904,560.60, 629,856,840.90 and 392,694,781.40

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Solution

The fourth proportional to 419,904,560.60, 629,856,840.90 and 392,694,781.40 is: 589,042,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,560.60 : 629,856,840.90 = 392,694,781.40 : x
  2. Step 2: Convert to fraction form
    419,904,560.60/629,856,840.90 = 392,694,781.40/x
  3. Step 3: Cross multiply
    419,904,560.60x = 629,856,840.90 × 392,694,781.40
  4. Step 4: Simplify right side
    419,904,560.60x = 247,341,494,450,520,064
  5. Step 5: Solve for x
    x = 247,341,494,450,520,064/419,904,560.60
  6. Step 6: Final answer
    x = 589,042,172.10

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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.