Finding the Fourth Proportional to 3,987,916.48, 5,503,296.74 and 2,177,080.48
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Solution
The fourth proportional to 3,987,916.48, 5,503,296.74 and 2,177,080.48 is: 3,004,355.78
Step by Step Solution
- Step 1: Write the proportion equation
3,987,916.48 : 5,503,296.74 = 2,177,080.48 : x - Step 2: Convert to fraction form
3,987,916.48/5,503,296.74 = 2,177,080.48/x - Step 3: Cross multiply
3,987,916.48x = 5,503,296.74 × 2,177,080.48 - Step 4: Simplify right side
3,987,916.48x = 11,981,119,908,301.63 - Step 5: Solve for x
x = 11,981,119,908,301.63/3,987,916.48 - Step 6: Final answer
x = 3,004,355.78
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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.