Home / 815,065.12-1,124,965.92-621,974.56

Finding the Fourth Proportional to 815,065.12, 1,124,965.92 and 621,974.56

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Solution

The fourth proportional to 815,065.12, 1,124,965.92 and 621,974.56 is: 858,459.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,065.12 : 1,124,965.92 = 621,974.56 : x
  2. Step 2: Convert to fraction form
    815,065.12/1,124,965.92 = 621,974.56/x
  3. Step 3: Cross multiply
    815,065.12x = 1,124,965.92 × 621,974.56
  4. Step 4: Simplify right side
    815,065.12x = 699,700,183,107.00
  5. Step 5: Solve for x
    x = 699,700,183,107.00/815,065.12
  6. Step 6: Final answer
    x = 858,459.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.