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Finding the Fourth Proportional to 512,546.60, 768,819.90 and 488,052.20

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Solution

The fourth proportional to 512,546.60, 768,819.90 and 488,052.20 is: 732,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,546.60 : 768,819.90 = 488,052.20 : x
  2. Step 2: Convert to fraction form
    512,546.60/768,819.90 = 488,052.20/x
  3. Step 3: Cross multiply
    512,546.60x = 768,819.90 × 488,052.20
  4. Step 4: Simplify right side
    512,546.60x = 375,224,243,598.78
  5. Step 5: Solve for x
    x = 375,224,243,598.78/512,546.60
  6. Step 6: Final answer
    x = 732,078.30

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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.