Finding the Fourth Proportional to 687,163.48, 1,031,147.18 and 287,770.70
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Solution
The fourth proportional to 687,163.48, 1,031,147.18 and 287,770.70 is: 431,824.38
Step by Step Solution
- Step 1: Write the proportion equation
687,163.48 : 1,031,147.18 = 287,770.70 : x - Step 2: Convert to fraction form
687,163.48/1,031,147.18 = 287,770.70/x - Step 3: Cross multiply
687,163.48x = 1,031,147.18 × 287,770.70 - Step 4: Simplify right side
687,163.48x = 296,733,945,791.63 - Step 5: Solve for x
x = 296,733,945,791.63/687,163.48 - Step 6: Final answer
x = 431,824.38
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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.