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Finding the Fourth Proportional to 582,076.80, 873,115.20 and 512,092.80

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Solution

The fourth proportional to 582,076.80, 873,115.20 and 512,092.80 is: 768,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,076.80 : 873,115.20 = 512,092.80 : x
  2. Step 2: Convert to fraction form
    582,076.80/873,115.20 = 512,092.80/x
  3. Step 3: Cross multiply
    582,076.80x = 873,115.20 × 512,092.80
  4. Step 4: Simplify right side
    582,076.80x = 447,116,007,490.56
  5. Step 5: Solve for x
    x = 447,116,007,490.56/582,076.80
  6. Step 6: Final answer
    x = 768,139.20

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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.