Finding the Fourth Proportional to 990,722.57, 1,367,615.67 and 668,868.62
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Solution
The fourth proportional to 990,722.57, 1,367,615.67 and 668,868.62 is: 923,321.25
Step by Step Solution
- Step 1: Write the proportion equation
990,722.57 : 1,367,615.67 = 668,868.62 : x - Step 2: Convert to fraction form
990,722.57/1,367,615.67 = 668,868.62/x - Step 3: Cross multiply
990,722.57x = 1,367,615.67 × 668,868.62 - Step 4: Simplify right side
990,722.57x = 914,755,205,883.28 - Step 5: Solve for x
x = 914,755,205,883.28/990,722.57 - Step 6: Final answer
x = 923,321.25
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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.