Home / 419,904,516.60-629,856,774.90-213,280,255.80

Finding the Fourth Proportional to 419,904,516.60, 629,856,774.90 and 213,280,255.80

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Solution

The fourth proportional to 419,904,516.60, 629,856,774.90 and 213,280,255.80 is: 319,920,383.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,516.60 : 629,856,774.90 = 213,280,255.80 : x
  2. Step 2: Convert to fraction form
    419,904,516.60/629,856,774.90 = 213,280,255.80/x
  3. Step 3: Cross multiply
    419,904,516.60x = 629,856,774.90 × 213,280,255.80
  4. Step 4: Simplify right side
    419,904,516.60x = 134,336,014,068,035,024
  5. Step 5: Solve for x
    x = 134,336,014,068,035,024/419,904,516.60
  6. Step 6: Final answer
    x = 319,920,383.70

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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.