Finding the Fourth Proportional to 3,987,712.70, 5,981,569.05 and 3,679,783.10
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Solution
The fourth proportional to 3,987,712.70, 5,981,569.05 and 3,679,783.10 is: 5,519,674.65
Step by Step Solution
- Step 1: Write the proportion equation
3,987,712.70 : 5,981,569.05 = 3,679,783.10 : x - Step 2: Convert to fraction form
3,987,712.70/5,981,569.05 = 3,679,783.10/x - Step 3: Cross multiply
3,987,712.70x = 5,981,569.05 × 3,679,783.10 - Step 4: Simplify right side
3,987,712.70x = 22,010,876,701,673.05 - Step 5: Solve for x
x = 22,010,876,701,673.05/3,987,712.70 - Step 6: Final answer
x = 5,519,674.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.