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Finding the Fourth Proportional to 659,609.97, 989,216.91 and 280,527.54

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Solution

The fourth proportional to 659,609.97, 989,216.91 and 280,527.54 is: 420,707.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,609.97 : 989,216.91 = 280,527.54 : x
  2. Step 2: Convert to fraction form
    659,609.97/989,216.91 = 280,527.54/x
  3. Step 3: Cross multiply
    659,609.97x = 989,216.91 × 280,527.54
  4. Step 4: Simplify right side
    659,609.97x = 277,502,586,288.70
  5. Step 5: Solve for x
    x = 277,502,586,288.70/659,609.97
  6. Step 6: Final answer
    x = 420,707.08

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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.