Home / 2,591,121.90-3,878,711.22-1,690,624.65

Finding the Fourth Proportional to 2,591,121.90, 3,878,711.22 and 1,690,624.65

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Solution

The fourth proportional to 2,591,121.90, 3,878,711.22 and 1,690,624.65 is: 2,530,735.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591,121.90 : 3,878,711.22 = 1,690,624.65 : x
  2. Step 2: Convert to fraction form
    2,591,121.90/3,878,711.22 = 1,690,624.65/x
  3. Step 3: Cross multiply
    2,591,121.90x = 3,878,711.22 × 1,690,624.65
  4. Step 4: Simplify right side
    2,591,121.90x = 6,557,444,798,763.57
  5. Step 5: Solve for x
    x = 6,557,444,798,763.57/2,591,121.90
  6. Step 6: Final answer
    x = 2,530,735.74

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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.