Home / 2,138,867.70-3,205,709.55-1,238,579.70

Finding the Fourth Proportional to 2,138,867.70, 3,205,709.55 and 1,238,579.70

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Solution

The fourth proportional to 2,138,867.70, 3,205,709.55 and 1,238,579.70 is: 1,856,368.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,867.70 : 3,205,709.55 = 1,238,579.70 : x
  2. Step 2: Convert to fraction form
    2,138,867.70/3,205,709.55 = 1,238,579.70/x
  3. Step 3: Cross multiply
    2,138,867.70x = 3,205,709.55 × 1,238,579.70
  4. Step 4: Simplify right side
    2,138,867.70x = 3,970,526,772,726.14
  5. Step 5: Solve for x
    x = 3,970,526,772,726.14/2,138,867.70
  6. Step 6: Final answer
    x = 1,856,368.57

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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.