Finding the Fourth Proportional to 489,121.88, 674,988.21 and 274,261.95
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Solution
The fourth proportional to 489,121.88, 674,988.21 and 274,261.95 is: 378,481.50
Step by Step Solution
- Step 1: Write the proportion equation
489,121.88 : 674,988.21 = 274,261.95 : x - Step 2: Convert to fraction form
489,121.88/674,988.21 = 274,261.95/x - Step 3: Cross multiply
489,121.88x = 674,988.21 × 274,261.95 - Step 4: Simplify right side
489,121.88x = 185,123,582,701.61 - Step 5: Solve for x
x = 185,123,582,701.61/489,121.88 - Step 6: Final answer
x = 378,481.50
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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.