Finding the Fourth Proportional to 3,180,790.88, 4,389,163.71 and 1,891,382.12
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Solution
The fourth proportional to 3,180,790.88, 4,389,163.71 and 1,891,382.12 is: 2,609,912.46
Step by Step Solution
- Step 1: Write the proportion equation
3,180,790.88 : 4,389,163.71 = 1,891,382.12 : x - Step 2: Convert to fraction form
3,180,790.88/4,389,163.71 = 1,891,382.12/x - Step 3: Cross multiply
3,180,790.88x = 4,389,163.71 × 1,891,382.12 - Step 4: Simplify right side
3,180,790.88x = 8,301,585,762,846.87 - Step 5: Solve for x
x = 8,301,585,762,846.87/3,180,790.88 - Step 6: Final answer
x = 2,609,912.46
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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.