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Finding the Fourth Proportional to 18,383,418.80, 27,579,064.80 and 5,605,215.20

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Solution

The fourth proportional to 18,383,418.80, 27,579,064.80 and 5,605,215.20 is: 8,409,023.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383,418.80 : 27,579,064.80 = 5,605,215.20 : x
  2. Step 2: Convert to fraction form
    18,383,418.80/27,579,064.80 = 5,605,215.20/x
  3. Step 3: Cross multiply
    18,383,418.80x = 27,579,064.80 × 5,605,215.20
  4. Step 4: Simplify right side
    18,383,418.80x = 154,586,593,218,744.97
  5. Step 5: Solve for x
    x = 154,586,593,218,744.97/18,383,418.80
  6. Step 6: Final answer
    x = 8,409,023.09

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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.