Home / 815,842.84-1,223,418.26-388,884.73

Finding the Fourth Proportional to 815,842.84, 1,223,418.26 and 388,884.73

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Solution

The fourth proportional to 815,842.84, 1,223,418.26 and 388,884.73 is: 583,162.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,842.84 : 1,223,418.26 = 388,884.73 : x
  2. Step 2: Convert to fraction form
    815,842.84/1,223,418.26 = 388,884.73/x
  3. Step 3: Cross multiply
    815,842.84x = 1,223,418.26 × 388,884.73
  4. Step 4: Simplify right side
    815,842.84x = 475,768,679,717.17
  5. Step 5: Solve for x
    x = 475,768,679,717.17/815,842.84
  6. Step 6: Final answer
    x = 583,162.17

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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.