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Finding the Fourth Proportional to 391,796.24, 588,383.46 and 386,186.58

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Solution

The fourth proportional to 391,796.24, 588,383.46 and 386,186.58 is: 579,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,796.24 : 588,383.46 = 386,186.58 : x
  2. Step 2: Convert to fraction form
    391,796.24/588,383.46 = 386,186.58/x
  3. Step 3: Cross multiply
    391,796.24x = 588,383.46 × 386,186.58
  4. Step 4: Simplify right side
    391,796.24x = 227,225,796,145.97
  5. Step 5: Solve for x
    x = 227,225,796,145.97/391,796.24
  6. Step 6: Final answer
    x = 579,959.10

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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.