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Finding the Fourth Proportional to 659,634.22, 989,253.42 and 280,552.06

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Solution

The fourth proportional to 659,634.22, 989,253.42 and 280,552.06 is: 420,743.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,634.22 : 989,253.42 = 280,552.06 : x
  2. Step 2: Convert to fraction form
    659,634.22/989,253.42 = 280,552.06/x
  3. Step 3: Cross multiply
    659,634.22x = 989,253.42 × 280,552.06
  4. Step 4: Simplify right side
    659,634.22x = 277,537,084,843.05
  5. Step 5: Solve for x
    x = 277,537,084,843.05/659,634.22
  6. Step 6: Final answer
    x = 420,743.92

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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.