Home / 806,100.87-1,209,908.86-422,125.33

Finding the Fourth Proportional to 806,100.87, 1,209,908.86 and 422,125.33

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Solution

The fourth proportional to 806,100.87, 1,209,908.86 and 422,125.33 is: 633,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,100.87 : 1,209,908.86 = 422,125.33 : x
  2. Step 2: Convert to fraction form
    806,100.87/1,209,908.86 = 422,125.33/x
  3. Step 3: Cross multiply
    806,100.87x = 1,209,908.86 × 422,125.33
  4. Step 4: Simplify right side
    806,100.87x = 510,733,170,747.88
  5. Step 5: Solve for x
    x = 510,733,170,747.88/806,100.87
  6. Step 6: Final answer
    x = 633,584.70

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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.