Finding the Fourth Proportional to 489,786.40, 675,819.84 and 274,935.52
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Solution
The fourth proportional to 489,786.40, 675,819.84 and 274,935.52 is: 379,363.08
Step by Step Solution
- Step 1: Write the proportion equation
489,786.40 : 675,819.84 = 274,935.52 : x - Step 2: Convert to fraction form
489,786.40/675,819.84 = 274,935.52/x - Step 3: Cross multiply
489,786.40x = 675,819.84 × 274,935.52 - Step 4: Simplify right side
489,786.40x = 185,806,879,136.72 - Step 5: Solve for x
x = 185,806,879,136.72/489,786.40 - Step 6: Final answer
x = 379,363.08
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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.