Home / 810,063.85-1,215,091.39-330,289.80

Finding the Fourth Proportional to 810,063.85, 1,215,091.39 and 330,289.80

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Solution

The fourth proportional to 810,063.85, 1,215,091.39 and 330,289.80 is: 495,432.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,063.85 : 1,215,091.39 = 330,289.80 : x
  2. Step 2: Convert to fraction form
    810,063.85/1,215,091.39 = 330,289.80/x
  3. Step 3: Cross multiply
    810,063.85x = 1,215,091.39 × 330,289.80
  4. Step 4: Simplify right side
    810,063.85x = 401,332,287,031.92
  5. Step 5: Solve for x
    x = 401,332,287,031.92/810,063.85
  6. Step 6: Final answer
    x = 495,432.91

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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.