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Finding the Fourth Proportional to 512,659.82, 768,320.87 and 370,982.31

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Solution

The fourth proportional to 512,659.82, 768,320.87 and 370,982.31 is: 555,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,659.82 : 768,320.87 = 370,982.31 : x
  2. Step 2: Convert to fraction form
    512,659.82/768,320.87 = 370,982.31/x
  3. Step 3: Cross multiply
    512,659.82x = 768,320.87 × 370,982.31
  4. Step 4: Simplify right side
    512,659.82x = 285,033,449,318.90
  5. Step 5: Solve for x
    x = 285,033,449,318.90/512,659.82
  6. Step 6: Final answer
    x = 555,989.45

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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.