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Finding the Fourth Proportional to 667,360.22, 920,956.81 and 361,436.61

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Solution

The fourth proportional to 667,360.22, 920,956.81 and 361,436.61 is: 498,782.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,360.22 : 920,956.81 = 361,436.61 : x
  2. Step 2: Convert to fraction form
    667,360.22/920,956.81 = 361,436.61/x
  3. Step 3: Cross multiply
    667,360.22x = 920,956.81 × 361,436.61
  4. Step 4: Simplify right side
    667,360.22x = 332,867,507,610.42
  5. Step 5: Solve for x
    x = 332,867,507,610.42/667,360.22
  6. Step 6: Final answer
    x = 498,782.37

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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.