Home / 815,645.97-1,222,795.31-359,912.70

Finding the Fourth Proportional to 815,645.97, 1,222,795.31 and 359,912.70

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Solution

The fourth proportional to 815,645.97, 1,222,795.31 and 359,912.70 is: 539,571.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,645.97 : 1,222,795.31 = 359,912.70 : x
  2. Step 2: Convert to fraction form
    815,645.97/1,222,795.31 = 359,912.70/x
  3. Step 3: Cross multiply
    815,645.97x = 1,222,795.31 × 359,912.70
  4. Step 4: Simplify right side
    815,645.97x = 440,099,559,769.87
  5. Step 5: Solve for x
    x = 440,099,559,769.87/815,645.97
  6. Step 6: Final answer
    x = 539,571.79

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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.