Home / 3,173,145.82-4,382,546.64-2,138,869.78

Finding the Fourth Proportional to 3,173,145.82, 4,382,546.64 and 2,138,869.78

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Solution

The fourth proportional to 3,173,145.82, 4,382,546.64 and 2,138,869.78 is: 2,954,070.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173,145.82 : 4,382,546.64 = 2,138,869.78 : x
  2. Step 2: Convert to fraction form
    3,173,145.82/4,382,546.64 = 2,138,869.78/x
  3. Step 3: Cross multiply
    3,173,145.82x = 4,382,546.64 × 2,138,869.78
  4. Step 4: Simplify right side
    3,173,145.82x = 9,373,696,567,736.54
  5. Step 5: Solve for x
    x = 9,373,696,567,736.54/3,173,145.82
  6. Step 6: Final answer
    x = 2,954,070.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.