Home / 2,188,992.13-3,020,610.34-1,221,944.47

Finding the Fourth Proportional to 2,188,992.13, 3,020,610.34 and 1,221,944.47

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Solution

The fourth proportional to 2,188,992.13, 3,020,610.34 and 1,221,944.47 is: 1,686,172.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,992.13 : 3,020,610.34 = 1,221,944.47 : x
  2. Step 2: Convert to fraction form
    2,188,992.13/3,020,610.34 = 1,221,944.47/x
  3. Step 3: Cross multiply
    2,188,992.13x = 3,020,610.34 × 1,221,944.47
  4. Step 4: Simplify right side
    2,188,992.13x = 3,691,018,079,775.05
  5. Step 5: Solve for x
    x = 3,691,018,079,775.05/2,188,992.13
  6. Step 6: Final answer
    x = 1,686,172.39

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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.