Home / 815,857.96-1,223,786.94-310,302.15

Finding the Fourth Proportional to 815,857.96, 1,223,786.94 and 310,302.15

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Solution

The fourth proportional to 815,857.96, 1,223,786.94 and 310,302.15 is: 465,453.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,857.96 : 1,223,786.94 = 310,302.15 : x
  2. Step 2: Convert to fraction form
    815,857.96/1,223,786.94 = 310,302.15/x
  3. Step 3: Cross multiply
    815,857.96x = 1,223,786.94 × 310,302.15
  4. Step 4: Simplify right side
    815,857.96x = 379,743,721,694.01
  5. Step 5: Solve for x
    x = 379,743,721,694.01/815,857.96
  6. Step 6: Final answer
    x = 465,453.23

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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.