Finding the Fourth Proportional to 3,906,431.56, 5,390,614.20 and 2,163,982.96
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Solution
The fourth proportional to 3,906,431.56, 5,390,614.20 and 2,163,982.96 is: 2,986,151.71
Step by Step Solution
- Step 1: Write the proportion equation
3,906,431.56 : 5,390,614.20 = 2,163,982.96 : x - Step 2: Convert to fraction form
3,906,431.56/5,390,614.20 = 2,163,982.96/x - Step 3: Cross multiply
3,906,431.56x = 5,390,614.20 × 2,163,982.96 - Step 4: Simplify right side
3,906,431.56x = 11,665,197,272,734.03 - Step 5: Solve for x
x = 11,665,197,272,734.03/3,906,431.56 - Step 6: Final answer
x = 2,986,151.71
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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.