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Finding the Fourth Proportional to 666,394.33, 919,624.10 and 376,067.34

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Solution

The fourth proportional to 666,394.33, 919,624.10 and 376,067.34 is: 518,972.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,394.33 : 919,624.10 = 376,067.34 : x
  2. Step 2: Convert to fraction form
    666,394.33/919,624.10 = 376,067.34/x
  3. Step 3: Cross multiply
    666,394.33x = 919,624.10 × 376,067.34
  4. Step 4: Simplify right side
    666,394.33x = 345,840,589,086.89
  5. Step 5: Solve for x
    x = 345,840,589,086.89/666,394.33
  6. Step 6: Final answer
    x = 518,972.89

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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.