Finding the Fourth Proportional to 990,755.29, 1,367,660.97 and 668,901.37
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Solution
The fourth proportional to 990,755.29, 1,367,660.97 and 668,901.37 is: 923,366.55
Step by Step Solution
- Step 1: Write the proportion equation
990,755.29 : 1,367,660.97 = 668,901.37 : x - Step 2: Convert to fraction form
990,755.29/1,367,660.97 = 668,901.37/x - Step 3: Cross multiply
990,755.29x = 1,367,660.97 × 668,901.37 - Step 4: Simplify right side
990,755.29x = 914,830,296,528.53 - Step 5: Solve for x
x = 914,830,296,528.53/990,755.29 - Step 6: Final answer
x = 923,366.55
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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.