Finding the Fourth Proportional to 642,480.62, 963,042.75 and 215,611.70
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Solution
The fourth proportional to 642,480.62, 963,042.75 and 215,611.70 is: 323,189.96
Step by Step Solution
- Step 1: Write the proportion equation
642,480.62 : 963,042.75 = 215,611.70 : x - Step 2: Convert to fraction form
642,480.62/963,042.75 = 215,611.70/x - Step 3: Cross multiply
642,480.62x = 963,042.75 × 215,611.70 - Step 4: Simplify right side
642,480.62x = 207,643,284,500.18 - Step 5: Solve for x
x = 207,643,284,500.18/642,480.62 - Step 6: Final answer
x = 323,189.96
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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.