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Finding the Fourth Proportional to 1,270,721.56, 1,906,083.02 and 797,739.08

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Solution

The fourth proportional to 1,270,721.56, 1,906,083.02 and 797,739.08 is: 1,196,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,721.56 : 1,906,083.02 = 797,739.08 : x
  2. Step 2: Convert to fraction form
    1,270,721.56/1,906,083.02 = 797,739.08/x
  3. Step 3: Cross multiply
    1,270,721.56x = 1,906,083.02 × 797,739.08
  4. Step 4: Simplify right side
    1,270,721.56x = 1,520,556,914,778.42
  5. Step 5: Solve for x
    x = 1,520,556,914,778.42/1,270,721.56
  6. Step 6: Final answer
    x = 1,196,609.05

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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.