Finding the Fourth Proportional to 3,858,141.20, 5,323,745.49 and 2,115,351.97
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Solution
The fourth proportional to 3,858,141.20, 5,323,745.49 and 2,115,351.97 is: 2,918,917.41
Step by Step Solution
- Step 1: Write the proportion equation
3,858,141.20 : 5,323,745.49 = 2,115,351.97 : x - Step 2: Convert to fraction form
3,858,141.20/5,323,745.49 = 2,115,351.97/x - Step 3: Cross multiply
3,858,141.20x = 5,323,745.49 × 2,115,351.97 - Step 4: Simplify right side
3,858,141.20x = 11,261,595,510,050.12 - Step 5: Solve for x
x = 11,261,595,510,050.12/3,858,141.20 - Step 6: Final answer
x = 2,918,917.41
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.