Home / 2,189,778.10-3,021,677.87-1,222,887.65

Finding the Fourth Proportional to 2,189,778.10, 3,021,677.87 and 1,222,887.65

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Solution

The fourth proportional to 2,189,778.10, 3,021,677.87 and 1,222,887.65 is: 1,687,464.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189,778.10 : 3,021,677.87 = 1,222,887.65 : x
  2. Step 2: Convert to fraction form
    2,189,778.10/3,021,677.87 = 1,222,887.65/x
  3. Step 3: Cross multiply
    2,189,778.10x = 3,021,677.87 × 1,222,887.65
  4. Step 4: Simplify right side
    2,189,778.10x = 3,695,172,528,278.48
  5. Step 5: Solve for x
    x = 3,695,172,528,278.48/2,189,778.10
  6. Step 6: Final answer
    x = 1,687,464.37

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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.