Home / 419,904,431.60-629,856,647.40-381,640,679.60

Finding the Fourth Proportional to 419,904,431.60, 629,856,647.40 and 381,640,679.60

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Solution

The fourth proportional to 419,904,431.60, 629,856,647.40 and 381,640,679.60 is: 572,461,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,431.60 : 629,856,647.40 = 381,640,679.60 : x
  2. Step 2: Convert to fraction form
    419,904,431.60/629,856,647.40 = 381,640,679.60/x
  3. Step 3: Cross multiply
    419,904,431.60x = 629,856,647.40 × 381,640,679.60
  4. Step 4: Simplify right side
    419,904,431.60x = 240,378,918,964,313,568
  5. Step 5: Solve for x
    x = 240,378,918,964,313,568/419,904,431.60
  6. Step 6: Final answer
    x = 572,461,019.40

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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.