Home / 419,904,512.10-629,856,768.15-213,280,251.30

Finding the Fourth Proportional to 419,904,512.10, 629,856,768.15 and 213,280,251.30

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Solution

The fourth proportional to 419,904,512.10, 629,856,768.15 and 213,280,251.30 is: 319,920,376.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,512.10 : 629,856,768.15 = 213,280,251.30 : x
  2. Step 2: Convert to fraction form
    419,904,512.10/629,856,768.15 = 213,280,251.30/x
  3. Step 3: Cross multiply
    419,904,512.10x = 629,856,768.15 × 213,280,251.30
  4. Step 4: Simplify right side
    419,904,512.10x = 134,336,009,794,037,840
  5. Step 5: Solve for x
    x = 134,336,009,794,037,840/419,904,512.10
  6. Step 6: Final answer
    x = 319,920,376.95

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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.