Finding the Fourth Proportional to 543,121.67, 815,218.80 and 407,714.93
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Solution
The fourth proportional to 543,121.67, 815,218.80 and 407,714.93 is: 611,974.99
Step by Step Solution
- Step 1: Write the proportion equation
543,121.67 : 815,218.80 = 407,714.93 : x - Step 2: Convert to fraction form
543,121.67/815,218.80 = 407,714.93/x - Step 3: Cross multiply
543,121.67x = 815,218.80 × 407,714.93 - Step 4: Simplify right side
543,121.67x = 332,376,879,734.38 - Step 5: Solve for x
x = 332,376,879,734.38/543,121.67 - Step 6: Final answer
x = 611,974.99
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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.