Finding the Fourth Proportional to 494,091.70, 681,596.12 and 312,497.80
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Solution
The fourth proportional to 494,091.70, 681,596.12 and 312,497.80 is: 431,088.58
Step by Step Solution
- Step 1: Write the proportion equation
494,091.70 : 681,596.12 = 312,497.80 : x - Step 2: Convert to fraction form
494,091.70/681,596.12 = 312,497.80/x - Step 3: Cross multiply
494,091.70x = 681,596.12 × 312,497.80 - Step 4: Simplify right side
494,091.70x = 212,997,287,988.54 - Step 5: Solve for x
x = 212,997,287,988.54/494,091.70 - Step 6: Final answer
x = 431,088.58
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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.