Home / 1,121,855.40-1,682,785.80-447,991.56

Finding the Fourth Proportional to 1,121,855.40, 1,682,785.80 and 447,991.56

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Solution

The fourth proportional to 1,121,855.40, 1,682,785.80 and 447,991.56 is: 671,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,855.40 : 1,682,785.80 = 447,991.56 : x
  2. Step 2: Convert to fraction form
    1,121,855.40/1,682,785.80 = 447,991.56/x
  3. Step 3: Cross multiply
    1,121,855.40x = 1,682,785.80 × 447,991.56
  4. Step 4: Simplify right side
    1,121,855.40x = 753,873,835,687.85
  5. Step 5: Solve for x
    x = 753,873,835,687.85/1,121,855.40
  6. Step 6: Final answer
    x = 671,988.42

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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.