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Finding the Fourth Proportional to 665,809.56, 998,709.84 and 266,542.56

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Solution

The fourth proportional to 665,809.56, 998,709.84 and 266,542.56 is: 399,812.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,809.56 : 998,709.84 = 266,542.56 : x
  2. Step 2: Convert to fraction form
    665,809.56/998,709.84 = 266,542.56/x
  3. Step 3: Cross multiply
    665,809.56x = 998,709.84 × 266,542.56
  4. Step 4: Simplify right side
    665,809.56x = 266,198,677,450.79
  5. Step 5: Solve for x
    x = 266,198,677,450.79/665,809.56
  6. Step 6: Final answer
    x = 399,812.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.