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Finding the Fourth Proportional to 1,947,789.25, 2,687,899 and 1,088,356.57

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Solution

The fourth proportional to 1,947,789.25, 2,687,899 and 1,088,356.57 is: 1,501,904.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947,789.25 : 2,687,899 = 1,088,356.57 : x
  2. Step 2: Convert to fraction form
    1,947,789.25/2,687,899 = 1,088,356.57/x
  3. Step 3: Cross multiply
    1,947,789.25x = 2,687,899 × 1,088,356.57
  4. Step 4: Simplify right side
    1,947,789.25x = 2,925,392,536,146.43
  5. Step 5: Solve for x
    x = 2,925,392,536,146.43/1,947,789.25
  6. Step 6: Final answer
    x = 1,501,904.04

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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.