Home / 810,758.53-1,215,187.72-330,686.65

Finding the Fourth Proportional to 810,758.53, 1,215,187.72 and 330,686.65

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Solution

The fourth proportional to 810,758.53, 1,215,187.72 and 330,686.65 is: 495,642.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,758.53 : 1,215,187.72 = 330,686.65 : x
  2. Step 2: Convert to fraction form
    810,758.53/1,215,187.72 = 330,686.65/x
  3. Step 3: Cross multiply
    810,758.53x = 1,215,187.72 × 330,686.65
  4. Step 4: Simplify right side
    810,758.53x = 401,846,356,940.21
  5. Step 5: Solve for x
    x = 401,846,356,940.21/810,758.53
  6. Step 6: Final answer
    x = 495,642.46

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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.