Home / 1,391,990.85-2,087,998.61-550,542.69

Finding the Fourth Proportional to 1,391,990.85, 2,087,998.61 and 550,542.69

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Solution

The fourth proportional to 1,391,990.85, 2,087,998.61 and 550,542.69 is: 825,818.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,990.85 : 2,087,998.61 = 550,542.69 : x
  2. Step 2: Convert to fraction form
    1,391,990.85/2,087,998.61 = 550,542.69/x
  3. Step 3: Cross multiply
    1,391,990.85x = 2,087,998.61 × 550,542.69
  4. Step 4: Simplify right side
    1,391,990.85x = 1,149,532,368,712.95
  5. Step 5: Solve for x
    x = 1,149,532,368,712.95/1,391,990.85
  6. Step 6: Final answer
    x = 825,818.91

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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.