Finding the Fourth Proportional to 489,115.20, 733,672.80 and 447,124.80
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Solution
The fourth proportional to 489,115.20, 733,672.80 and 447,124.80 is: 670,687.20
Step by Step Solution
- Step 1: Write the proportion equation
489,115.20 : 733,672.80 = 447,124.80 : x - Step 2: Convert to fraction form
489,115.20/733,672.80 = 447,124.80/x - Step 3: Cross multiply
489,115.20x = 733,672.80 × 447,124.80 - Step 4: Simplify right side
489,115.20x = 328,043,303,965.44 - Step 5: Solve for x
x = 328,043,303,965.44/489,115.20 - Step 6: Final answer
x = 670,687.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.