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Finding the Fourth Proportional to 659,010.97, 988,322.68 and 279,928.69

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Solution

The fourth proportional to 659,010.97, 988,322.68 and 279,928.69 is: 419,810.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,010.97 : 988,322.68 = 279,928.69 : x
  2. Step 2: Convert to fraction form
    659,010.97/988,322.68 = 279,928.69/x
  3. Step 3: Cross multiply
    659,010.97x = 988,322.68 × 279,928.69
  4. Step 4: Simplify right side
    659,010.97x = 276,659,876,548.11
  5. Step 5: Solve for x
    x = 276,659,876,548.11/659,010.97
  6. Step 6: Final answer
    x = 419,810.73

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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.