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Finding the Fourth Proportional to 1,991,609.97, 2,748,409.20 and 1,132,170.27

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Solution

The fourth proportional to 1,991,609.97, 2,748,409.20 and 1,132,170.27 is: 1,562,387.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,609.97 : 2,748,409.20 = 1,132,170.27 : x
  2. Step 2: Convert to fraction form
    1,991,609.97/2,748,409.20 = 1,132,170.27/x
  3. Step 3: Cross multiply
    1,991,609.97x = 2,748,409.20 × 1,132,170.27
  4. Step 4: Simplify right side
    1,991,609.97x = 3,111,667,186,034.48
  5. Step 5: Solve for x
    x = 3,111,667,186,034.48/1,991,609.97
  6. Step 6: Final answer
    x = 1,562,387.83

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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.