Home / 654,220,479.38-981,339,266.75-217,521,163.53

Finding the Fourth Proportional to 654,220,479.38, 981,339,266.75 and 217,521,163.53

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Solution

The fourth proportional to 654,220,479.38, 981,339,266.75 and 217,521,163.53 is: 326,284,587.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,220,479.38 : 981,339,266.75 = 217,521,163.53 : x
  2. Step 2: Convert to fraction form
    654,220,479.38/981,339,266.75 = 217,521,163.53/x
  3. Step 3: Cross multiply
    654,220,479.38x = 981,339,266.75 × 217,521,163.53
  4. Step 4: Simplify right side
    654,220,479.38x = 213,462,059,120,654,144
  5. Step 5: Solve for x
    x = 213,462,059,120,654,144/654,220,479.38
  6. Step 6: Final answer
    x = 326,284,587.31

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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.