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Finding the Fourth Proportional to 815,733.90, 1,223,600.85 and 815,733.90

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Solution

The fourth proportional to 815,733.90, 1,223,600.85 and 815,733.90 is: 1,223,600.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,733.90 : 1,223,600.85 = 815,733.90 : x
  2. Step 2: Convert to fraction form
    815,733.90/1,223,600.85 = 815,733.90/x
  3. Step 3: Cross multiply
    815,733.90x = 1,223,600.85 × 815,733.90
  4. Step 4: Simplify right side
    815,733.90x = 998,132,693,413.82
  5. Step 5: Solve for x
    x = 998,132,693,413.82/815,733.90
  6. Step 6: Final answer
    x = 1,223,600.85

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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.