Finding the Fourth Proportional to 3,608,372.12, 4,979,553.11 and 2,158,067.33
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Solution
The fourth proportional to 3,608,372.12, 4,979,553.11 and 2,158,067.33 is: 2,978,132.66
Step by Step Solution
- Step 1: Write the proportion equation
3,608,372.12 : 4,979,553.11 = 2,158,067.33 : x - Step 2: Convert to fraction form
3,608,372.12/4,979,553.11 = 2,158,067.33/x - Step 3: Cross multiply
3,608,372.12x = 4,979,553.11 × 2,158,067.33 - Step 4: Simplify right side
3,608,372.12x = 10,746,210,859,793.13 - Step 5: Solve for x
x = 10,746,210,859,793.13/3,608,372.12 - Step 6: Final answer
x = 2,978,132.66
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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.