Finding the Fourth Proportional to 489,599.28, 675,640.68 and 274,743.60
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Solution
The fourth proportional to 489,599.28, 675,640.68 and 274,743.60 is: 379,142.62
Step by Step Solution
- Step 1: Write the proportion equation
489,599.28 : 675,640.68 = 274,743.60 : x - Step 2: Convert to fraction form
489,599.28/675,640.68 = 274,743.60/x - Step 3: Cross multiply
489,599.28x = 675,640.68 × 274,743.60 - Step 4: Simplify right side
489,599.28x = 185,627,952,729.65 - Step 5: Solve for x
x = 185,627,952,729.65/489,599.28 - Step 6: Final answer
x = 379,142.62
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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.