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Finding the Fourth Proportional to 1,093,694.60, 1,639,829.10 and 981,720.20

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Solution

The fourth proportional to 1,093,694.60, 1,639,829.10 and 981,720.20 is: 1,471,940.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,093,694.60 : 1,639,829.10 = 981,720.20 : x
  2. Step 2: Convert to fraction form
    1,093,694.60/1,639,829.10 = 981,720.20/x
  3. Step 3: Cross multiply
    1,093,694.60x = 1,639,829.10 × 981,720.20
  4. Step 4: Simplify right side
    1,093,694.60x = 1,609,853,352,017.82
  5. Step 5: Solve for x
    x = 1,609,853,352,017.82/1,093,694.60
  6. Step 6: Final answer
    x = 1,471,940.48

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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.