Finding the Fourth Proportional to 3,940,361.75, 5,437,706.37 and 2,221,478.12
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Solution
The fourth proportional to 3,940,361.75, 5,437,706.37 and 2,221,478.12 is: 3,065,643.84
Step by Step Solution
- Step 1: Write the proportion equation
3,940,361.75 : 5,437,706.37 = 2,221,478.12 : x - Step 2: Convert to fraction form
3,940,361.75/5,437,706.37 = 2,221,478.12/x - Step 3: Cross multiply
3,940,361.75x = 5,437,706.37 × 2,221,478.12 - Step 4: Simplify right side
3,940,361.75x = 12,079,745,723,939.62 - Step 5: Solve for x
x = 12,079,745,723,939.62/3,940,361.75 - Step 6: Final answer
x = 3,065,643.84
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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.