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Finding the Fourth Proportional to 667,473.44, 921,179.40 and 381,036.56

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Solution

The fourth proportional to 667,473.44, 921,179.40 and 381,036.56 is: 525,868.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,473.44 : 921,179.40 = 381,036.56 : x
  2. Step 2: Convert to fraction form
    667,473.44/921,179.40 = 381,036.56/x
  3. Step 3: Cross multiply
    667,473.44x = 921,179.40 × 381,036.56
  4. Step 4: Simplify right side
    667,473.44x = 351,003,029,718.86
  5. Step 5: Solve for x
    x = 351,003,029,718.86/667,473.44
  6. Step 6: Final answer
    x = 525,868.16

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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.