Home / 659,581.39-988,699.95-280,260.25

Finding the Fourth Proportional to 659,581.39, 988,699.95 and 280,260.25

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Solution

The fourth proportional to 659,581.39, 988,699.95 and 280,260.25 is: 420,104.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,581.39 : 988,699.95 = 280,260.25 : x
  2. Step 2: Convert to fraction form
    659,581.39/988,699.95 = 280,260.25/x
  3. Step 3: Cross multiply
    659,581.39x = 988,699.95 × 280,260.25
  4. Step 4: Simplify right side
    659,581.39x = 277,093,292,690.24
  5. Step 5: Solve for x
    x = 277,093,292,690.24/659,581.39
  6. Step 6: Final answer
    x = 420,104.78

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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.