Home / 815,214.05-1,222,177.95-515,061.97

Finding the Fourth Proportional to 815,214.05, 1,222,177.95 and 515,061.97

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Solution

The fourth proportional to 815,214.05, 1,222,177.95 and 515,061.97 is: 772,186.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,214.05 : 1,222,177.95 = 515,061.97 : x
  2. Step 2: Convert to fraction form
    815,214.05/1,222,177.95 = 515,061.97/x
  3. Step 3: Cross multiply
    815,214.05x = 1,222,177.95 × 515,061.97
  4. Step 4: Simplify right side
    815,214.05x = 629,497,382,617.56
  5. Step 5: Solve for x
    x = 629,497,382,617.56/815,214.05
  6. Step 6: Final answer
    x = 772,186.62

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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.