Home / 2,138,843.70-3,205,673.55-1,238,555.70

Finding the Fourth Proportional to 2,138,843.70, 3,205,673.55 and 1,238,555.70

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Solution

The fourth proportional to 2,138,843.70, 3,205,673.55 and 1,238,555.70 is: 1,856,332.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,843.70 : 3,205,673.55 = 1,238,555.70 : x
  2. Step 2: Convert to fraction form
    2,138,843.70/3,205,673.55 = 1,238,555.70/x
  3. Step 3: Cross multiply
    2,138,843.70x = 3,205,673.55 × 1,238,555.70
  4. Step 4: Simplify right side
    2,138,843.70x = 3,970,405,247,691.74
  5. Step 5: Solve for x
    x = 3,970,405,247,691.74/2,138,843.70
  6. Step 6: Final answer
    x = 1,856,332.58

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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.