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Finding the Fourth Proportional to 512,392.20, 769,057.06 and 259,847.04

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Solution

The fourth proportional to 512,392.20, 769,057.06 and 259,847.04 is: 390,008.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,392.20 : 769,057.06 = 259,847.04 : x
  2. Step 2: Convert to fraction form
    512,392.20/769,057.06 = 259,847.04/x
  3. Step 3: Cross multiply
    512,392.20x = 769,057.06 × 259,847.04
  4. Step 4: Simplify right side
    512,392.20x = 199,837,200,632.10
  5. Step 5: Solve for x
    x = 199,837,200,632.10/512,392.20
  6. Step 6: Final answer
    x = 390,008.28

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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.