Finding the Fourth Proportional to 718,391.18, 991,620.06 and 428,093.82
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Solution
The fourth proportional to 718,391.18, 991,620.06 and 428,093.82 is: 590,912.63
Step by Step Solution
- Step 1: Write the proportion equation
718,391.18 : 991,620.06 = 428,093.82 : x - Step 2: Convert to fraction form
718,391.18/991,620.06 = 428,093.82/x - Step 3: Cross multiply
718,391.18x = 991,620.06 × 428,093.82 - Step 4: Simplify right side
718,391.18x = 424,506,419,474.03 - Step 5: Solve for x
x = 424,506,419,474.03/718,391.18 - Step 6: Final answer
x = 590,912.63
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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.