Finding the Fourth Proportional to 990,725.07, 1,367,619.12 and 668,871.12
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Solution
The fourth proportional to 990,725.07, 1,367,619.12 and 668,871.12 is: 923,324.70
Step by Step Solution
- Step 1: Write the proportion equation
990,725.07 : 1,367,619.12 = 668,871.12 : x - Step 2: Convert to fraction form
990,725.07/1,367,619.12 = 668,871.12/x - Step 3: Cross multiply
990,725.07x = 1,367,619.12 × 668,871.12 - Step 4: Simplify right side
990,725.07x = 914,760,932,527.82 - Step 5: Solve for x
x = 914,760,932,527.82/990,725.07 - Step 6: Final answer
x = 923,324.70
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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.