Home / 419,904,660.60-629,856,990.90-189,881,249.40

Finding the Fourth Proportional to 419,904,660.60, 629,856,990.90 and 189,881,249.40

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Solution

The fourth proportional to 419,904,660.60, 629,856,990.90 and 189,881,249.40 is: 284,821,874.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,660.60 : 629,856,990.90 = 189,881,249.40 : x
  2. Step 2: Convert to fraction form
    419,904,660.60/629,856,990.90 = 189,881,249.40/x
  3. Step 3: Cross multiply
    419,904,660.60x = 629,856,990.90 × 189,881,249.40
  4. Step 4: Simplify right side
    419,904,660.60x = 119,598,032,375,416,432
  5. Step 5: Solve for x
    x = 119,598,032,375,416,432/419,904,660.60
  6. Step 6: Final answer
    x = 284,821,874.10

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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.