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Finding the Fourth Proportional to 512,190.60, 768,917.70 and 322,650.60

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Solution

The fourth proportional to 512,190.60, 768,917.70 and 322,650.60 is: 484,373.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,190.60 : 768,917.70 = 322,650.60 : x
  2. Step 2: Convert to fraction form
    512,190.60/768,917.70 = 322,650.60/x
  3. Step 3: Cross multiply
    512,190.60x = 768,917.70 × 322,650.60
  4. Step 4: Simplify right side
    512,190.60x = 248,091,757,255.62
  5. Step 5: Solve for x
    x = 248,091,757,255.62/512,190.60
  6. Step 6: Final answer
    x = 484,373.90

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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.