Finding the Fourth Proportional to 5,390,324.17, 7,438,608.49 and 2,942,935.21
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Solution
The fourth proportional to 5,390,324.17, 7,438,608.49 and 2,942,935.21 is: 4,061,229.37
Step by Step Solution
- Step 1: Write the proportion equation
5,390,324.17 : 7,438,608.49 = 2,942,935.21 : x - Step 2: Convert to fraction form
5,390,324.17/7,438,608.49 = 2,942,935.21/x - Step 3: Cross multiply
5,390,324.17x = 7,438,608.49 × 2,942,935.21 - Step 4: Simplify right side
5,390,324.17x = 21,891,342,838,625.93 - Step 5: Solve for x
x = 21,891,342,838,625.93/5,390,324.17 - Step 6: Final answer
x = 4,061,229.37
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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.