Home / 419,904,929.10-629,857,393.65-256,646,253.90

Finding the Fourth Proportional to 419,904,929.10, 629,857,393.65 and 256,646,253.90

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Solution

The fourth proportional to 419,904,929.10, 629,857,393.65 and 256,646,253.90 is: 384,969,380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,929.10 : 629,857,393.65 = 256,646,253.90 : x
  2. Step 2: Convert to fraction form
    419,904,929.10/629,857,393.65 = 256,646,253.90/x
  3. Step 3: Cross multiply
    419,904,929.10x = 629,857,393.65 × 256,646,253.90
  4. Step 4: Simplify right side
    419,904,929.10x = 161,650,540,571,490,144
  5. Step 5: Solve for x
    x = 161,650,540,571,490,144/419,904,929.10
  6. Step 6: Final answer
    x = 384,969,380.85

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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.