Finding the Fourth Proportional to 512,491.20, 768,736.80 and 489,163.20
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Solution
The fourth proportional to 512,491.20, 768,736.80 and 489,163.20 is: 733,744.80
Step by Step Solution
- Step 1: Write the proportion equation
512,491.20 : 768,736.80 = 489,163.20 : x - Step 2: Convert to fraction form
512,491.20/768,736.80 = 489,163.20/x - Step 3: Cross multiply
512,491.20x = 768,736.80 × 489,163.20 - Step 4: Simplify right side
512,491.20x = 376,037,753,045.76 - Step 5: Solve for x
x = 376,037,753,045.76/512,491.20 - Step 6: Final answer
x = 733,744.80
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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.