Home / 2,138,408.86-3,208,203.78-859,407.52

Finding the Fourth Proportional to 2,138,408.86, 3,208,203.78 and 859,407.52

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Solution

The fourth proportional to 2,138,408.86, 3,208,203.78 and 859,407.52 is: 1,289,348.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,408.86 : 3,208,203.78 = 859,407.52 : x
  2. Step 2: Convert to fraction form
    2,138,408.86/3,208,203.78 = 859,407.52/x
  3. Step 3: Cross multiply
    2,138,408.86x = 3,208,203.78 × 859,407.52
  4. Step 4: Simplify right side
    2,138,408.86x = 2,757,154,454,224.43
  5. Step 5: Solve for x
    x = 2,757,154,454,224.43/2,138,408.86
  6. Step 6: Final answer
    x = 1,289,348.59

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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.