Finding the Fourth Proportional to 3,978,249.26, 5,490,642.39 and 2,347,055.42
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Solution
The fourth proportional to 3,978,249.26, 5,490,642.39 and 2,347,055.42 is: 3,239,324.92
Step by Step Solution
- Step 1: Write the proportion equation
3,978,249.26 : 5,490,642.39 = 2,347,055.42 : x - Step 2: Convert to fraction form
3,978,249.26/5,490,642.39 = 2,347,055.42/x - Step 3: Cross multiply
3,978,249.26x = 5,490,642.39 × 2,347,055.42 - Step 4: Simplify right side
3,978,249.26x = 12,886,841,980,731.25 - Step 5: Solve for x
x = 12,886,841,980,731.25/3,978,249.26 - Step 6: Final answer
x = 3,239,324.92
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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.