Finding the Fourth Proportional to 3,987,918.66, 5,503,299.76 and 2,177,082.66
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Solution
The fourth proportional to 3,987,918.66, 5,503,299.76 and 2,177,082.66 is: 3,004,358.79
Step by Step Solution
- Step 1: Write the proportion equation
3,987,918.66 : 5,503,299.76 = 2,177,082.66 : x - Step 2: Convert to fraction form
3,987,918.66/5,503,299.76 = 2,177,082.66/x - Step 3: Cross multiply
3,987,918.66x = 5,503,299.76 × 2,177,082.66 - Step 4: Simplify right side
3,987,918.66x = 11,981,138,469,392.75 - Step 5: Solve for x
x = 11,981,138,469,392.75/3,987,918.66 - Step 6: Final answer
x = 3,004,358.79
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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.