Home / 812,545.38-1,121,284.53-449,984.34

Finding the Fourth Proportional to 812,545.38, 1,121,284.53 and 449,984.34

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Solution

The fourth proportional to 812,545.38, 1,121,284.53 and 449,984.34 is: 620,962.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,545.38 : 1,121,284.53 = 449,984.34 : x
  2. Step 2: Convert to fraction form
    812,545.38/1,121,284.53 = 449,984.34/x
  3. Step 3: Cross multiply
    812,545.38x = 1,121,284.53 × 449,984.34
  4. Step 4: Simplify right side
    812,545.38x = 504,560,479,184.26
  5. Step 5: Solve for x
    x = 504,560,479,184.26/812,545.38
  6. Step 6: Final answer
    x = 620,962.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.