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Finding the Fourth Proportional to 667,463.32, 921,094.62 and 361,532.80

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Solution

The fourth proportional to 667,463.32, 921,094.62 and 361,532.80 is: 498,912.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,463.32 : 921,094.62 = 361,532.80 : x
  2. Step 2: Convert to fraction form
    667,463.32/921,094.62 = 361,532.80/x
  3. Step 3: Cross multiply
    667,463.32x = 921,094.62 × 361,532.80
  4. Step 4: Simplify right side
    667,463.32x = 333,005,917,033.54
  5. Step 5: Solve for x
    x = 333,005,917,033.54/667,463.32
  6. Step 6: Final answer
    x = 498,912.68

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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.