Home / 2,189,276.21-3,021,169.79-1,222,421.69

Finding the Fourth Proportional to 2,189,276.21, 3,021,169.79 and 1,222,421.69

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Solution

The fourth proportional to 2,189,276.21, 3,021,169.79 and 1,222,421.69 is: 1,686,924.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189,276.21 : 3,021,169.79 = 1,222,421.69 : x
  2. Step 2: Convert to fraction form
    2,189,276.21/3,021,169.79 = 1,222,421.69/x
  3. Step 3: Cross multiply
    2,189,276.21x = 3,021,169.79 × 1,222,421.69
  4. Step 4: Simplify right side
    2,189,276.21x = 3,693,143,480,468.75
  5. Step 5: Solve for x
    x = 3,693,143,480,468.75/2,189,276.21
  6. Step 6: Final answer
    x = 1,686,924.41

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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.