Home / 815,187.45-1,222,992.60-309,757.17

Finding the Fourth Proportional to 815,187.45, 1,222,992.60 and 309,757.17

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Solution

The fourth proportional to 815,187.45, 1,222,992.60 and 309,757.17 is: 464,716.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,187.45 : 1,222,992.60 = 309,757.17 : x
  2. Step 2: Convert to fraction form
    815,187.45/1,222,992.60 = 309,757.17/x
  3. Step 3: Cross multiply
    815,187.45x = 1,222,992.60 × 309,757.17
  4. Step 4: Simplify right side
    815,187.45x = 378,830,726,706.94
  5. Step 5: Solve for x
    x = 378,830,726,706.94/815,187.45
  6. Step 6: Final answer
    x = 464,716.09

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1.5x scale

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.