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Finding the Fourth Proportional to 512,778.60, 767,673 and 298,892.16

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Solution

The fourth proportional to 512,778.60, 767,673 and 298,892.16 is: 447,466.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,778.60 : 767,673 = 298,892.16 : x
  2. Step 2: Convert to fraction form
    512,778.60/767,673 = 298,892.16/x
  3. Step 3: Cross multiply
    512,778.60x = 767,673 × 298,892.16
  4. Step 4: Simplify right side
    512,778.60x = 229,451,441,143.68
  5. Step 5: Solve for x
    x = 229,451,441,143.68/512,778.60
  6. Step 6: Final answer
    x = 447,466.88

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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.