Home / 811,827.66-1,217,813.04-212,786.76

Finding the Fourth Proportional to 811,827.66, 1,217,813.04 and 212,786.76

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Solution

The fourth proportional to 811,827.66, 1,217,813.04 and 212,786.76 is: 319,198.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,827.66 : 1,217,813.04 = 212,786.76 : x
  2. Step 2: Convert to fraction form
    811,827.66/1,217,813.04 = 212,786.76/x
  3. Step 3: Cross multiply
    811,827.66x = 1,217,813.04 × 212,786.76
  4. Step 4: Simplify right side
    811,827.66x = 259,134,491,067.35
  5. Step 5: Solve for x
    x = 259,134,491,067.35/811,827.66
  6. Step 6: Final answer
    x = 319,198.89

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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.