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Finding the Fourth Proportional to 667,732.12, 921,465.66 and 365,919.64

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Solution

The fourth proportional to 667,732.12, 921,465.66 and 365,919.64 is: 504,966.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,732.12 : 921,465.66 = 365,919.64 : x
  2. Step 2: Convert to fraction form
    667,732.12/921,465.66 = 365,919.64/x
  3. Step 3: Cross multiply
    667,732.12x = 921,465.66 × 365,919.64
  4. Step 4: Simplify right side
    667,732.12x = 337,182,382,579.56
  5. Step 5: Solve for x
    x = 337,182,382,579.56/667,732.12
  6. Step 6: Final answer
    x = 504,966.55

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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.