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Finding the Fourth Proportional to 664,848, 917,170.56 and 392,843.52

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Solution

The fourth proportional to 664,848, 917,170.56 and 392,843.52 is: 541,935.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,848 : 917,170.56 = 392,843.52 : x
  2. Step 2: Convert to fraction form
    664,848/917,170.56 = 392,843.52/x
  3. Step 3: Cross multiply
    664,848x = 917,170.56 × 392,843.52
  4. Step 4: Simplify right side
    664,848x = 360,304,511,230.77
  5. Step 5: Solve for x
    x = 360,304,511,230.77/664,848
  6. Step 6: Final answer
    x = 541,935.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.