Home / 810,564.92-1,215,871.97-278,078.25

Finding the Fourth Proportional to 810,564.92, 1,215,871.97 and 278,078.25

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Solution

The fourth proportional to 810,564.92, 1,215,871.97 and 278,078.25 is: 417,125.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,564.92 : 1,215,871.97 = 278,078.25 : x
  2. Step 2: Convert to fraction form
    810,564.92/1,215,871.97 = 278,078.25/x
  3. Step 3: Cross multiply
    810,564.92x = 1,215,871.97 × 278,078.25
  4. Step 4: Simplify right side
    810,564.92x = 338,107,548,251.26
  5. Step 5: Solve for x
    x = 338,107,548,251.26/810,564.92
  6. Step 6: Final answer
    x = 417,125.81

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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.