Home / 1,275,081.44-1,912,162.56-421,995.48

Finding the Fourth Proportional to 1,275,081.44, 1,912,162.56 and 421,995.48

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Solution

The fourth proportional to 1,275,081.44, 1,912,162.56 and 421,995.48 is: 632,841.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,081.44 : 1,912,162.56 = 421,995.48 : x
  2. Step 2: Convert to fraction form
    1,275,081.44/1,912,162.56 = 421,995.48/x
  3. Step 3: Cross multiply
    1,275,081.44x = 1,912,162.56 × 421,995.48
  4. Step 4: Simplify right side
    1,275,081.44x = 806,923,957,345.23
  5. Step 5: Solve for x
    x = 806,923,957,345.23/1,275,081.44
  6. Step 6: Final answer
    x = 632,841.11

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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.