Finding the Fourth Proportional to 990,186.19, 1,366,357.21 and 560,391.49
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Solution
The fourth proportional to 990,186.19, 1,366,357.21 and 560,391.49 is: 773,283.81
Step by Step Solution
- Step 1: Write the proportion equation
990,186.19 : 1,366,357.21 = 560,391.49 : x - Step 2: Convert to fraction form
990,186.19/1,366,357.21 = 560,391.49/x - Step 3: Cross multiply
990,186.19x = 1,366,357.21 × 560,391.49 - Step 4: Simplify right side
990,186.19x = 765,694,952,784.14 - Step 5: Solve for x
x = 765,694,952,784.14/990,186.19 - Step 6: Final answer
x = 773,283.81
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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.