Finding the Fourth Proportional to 5,161,163.61, 7,122,859.53 and 2,838,465.39
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Solution
The fourth proportional to 5,161,163.61, 7,122,859.53 and 2,838,465.39 is: 3,917,331.78
Step by Step Solution
- Step 1: Write the proportion equation
5,161,163.61 : 7,122,859.53 = 2,838,465.39 : x - Step 2: Convert to fraction form
5,161,163.61/7,122,859.53 = 2,838,465.39/x - Step 3: Cross multiply
5,161,163.61x = 7,122,859.53 × 2,838,465.39 - Step 4: Simplify right side
5,161,163.61x = 20,217,990,253,736.67 - Step 5: Solve for x
x = 20,217,990,253,736.67/5,161,163.61 - Step 6: Final answer
x = 3,917,331.78
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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.