Home / 820,897.40-1,231,469.22-288,324.56

Finding the Fourth Proportional to 820,897.40, 1,231,469.22 and 288,324.56

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Solution

The fourth proportional to 820,897.40, 1,231,469.22 and 288,324.56 is: 432,530.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,897.40 : 1,231,469.22 = 288,324.56 : x
  2. Step 2: Convert to fraction form
    820,897.40/1,231,469.22 = 288,324.56/x
  3. Step 3: Cross multiply
    820,897.40x = 1,231,469.22 × 288,324.56
  4. Step 4: Simplify right side
    820,897.40x = 355,062,821,010.04
  5. Step 5: Solve for x
    x = 355,062,821,010.04/820,897.40
  6. Step 6: Final answer
    x = 432,530.08

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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.