Home / 513,949.70-769,801.82-213,519.38

Finding the Fourth Proportional to 513,949.70, 769,801.82 and 213,519.38

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Solution

The fourth proportional to 513,949.70, 769,801.82 and 213,519.38 is: 319,812.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,949.70 : 769,801.82 = 213,519.38 : x
  2. Step 2: Convert to fraction form
    513,949.70/769,801.82 = 213,519.38/x
  3. Step 3: Cross multiply
    513,949.70x = 769,801.82 × 213,519.38
  4. Step 4: Simplify right side
    513,949.70x = 164,367,607,329.27
  5. Step 5: Solve for x
    x = 164,367,607,329.27/513,949.70
  6. Step 6: Final answer
    x = 319,812.63

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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.