Home / 2,147,921.55-3,221,867.73-728,976.51

Finding the Fourth Proportional to 2,147,921.55, 3,221,867.73 and 728,976.51

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Solution

The fourth proportional to 2,147,921.55, 3,221,867.73 and 728,976.51 is: 1,093,459.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147,921.55 : 3,221,867.73 = 728,976.51 : x
  2. Step 2: Convert to fraction form
    2,147,921.55/3,221,867.73 = 728,976.51/x
  3. Step 3: Cross multiply
    2,147,921.55x = 3,221,867.73 × 728,976.51
  4. Step 4: Simplify right side
    2,147,921.55x = 2,348,665,893,497.02
  5. Step 5: Solve for x
    x = 2,348,665,893,497.02/2,147,921.55
  6. Step 6: Final answer
    x = 1,093,459.81

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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.