Home / 810,064.11-1,215,091.76-330,290.04

Finding the Fourth Proportional to 810,064.11, 1,215,091.76 and 330,290.04

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Solution

The fourth proportional to 810,064.11, 1,215,091.76 and 330,290.04 is: 495,433.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,064.11 : 1,215,091.76 = 330,290.04 : x
  2. Step 2: Convert to fraction form
    810,064.11/1,215,091.76 = 330,290.04/x
  3. Step 3: Cross multiply
    810,064.11x = 1,215,091.76 × 330,290.04
  4. Step 4: Simplify right side
    810,064.11x = 401,332,706,014.07
  5. Step 5: Solve for x
    x = 401,332,706,014.07/810,064.11
  6. Step 6: Final answer
    x = 495,433.26

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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.