Home / 2,189,228.15-3,021,321.59-1,222,545.20

Finding the Fourth Proportional to 2,189,228.15, 3,021,321.59 and 1,222,545.20

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Solution

The fourth proportional to 2,189,228.15, 3,021,321.59 and 1,222,545.20 is: 1,687,216.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189,228.15 : 3,021,321.59 = 1,222,545.20 : x
  2. Step 2: Convert to fraction form
    2,189,228.15/3,021,321.59 = 1,222,545.20/x
  3. Step 3: Cross multiply
    2,189,228.15x = 3,021,321.59 × 1,222,545.20
  4. Step 4: Simplify right side
    2,189,228.15x = 3,693,702,195,460.62
  5. Step 5: Solve for x
    x = 3,693,702,195,460.62/2,189,228.15
  6. Step 6: Final answer
    x = 1,687,216.65

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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.