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Finding the Fourth Proportional to 659,610.97, 989,218.41 and 280,528.54

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Solution

The fourth proportional to 659,610.97, 989,218.41 and 280,528.54 is: 420,708.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,610.97 : 989,218.41 = 280,528.54 : x
  2. Step 2: Convert to fraction form
    659,610.97/989,218.41 = 280,528.54/x
  3. Step 3: Cross multiply
    659,610.97x = 989,218.41 × 280,528.54
  4. Step 4: Simplify right side
    659,610.97x = 277,503,996,298.42
  5. Step 5: Solve for x
    x = 277,503,996,298.42/659,610.97
  6. Step 6: Final answer
    x = 420,708.58

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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.