Finding the Fourth Proportional to 694,170.13, 1,040,992.39 and 378,455.17
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Solution
The fourth proportional to 694,170.13, 1,040,992.39 and 378,455.17 is: 567,539.48
Step by Step Solution
- Step 1: Write the proportion equation
694,170.13 : 1,040,992.39 = 378,455.17 : x - Step 2: Convert to fraction form
694,170.13/1,040,992.39 = 378,455.17/x - Step 3: Cross multiply
694,170.13x = 1,040,992.39 × 378,455.17 - Step 4: Simplify right side
694,170.13x = 393,968,951,926.16 - Step 5: Solve for x
x = 393,968,951,926.16/694,170.13 - Step 6: Final answer
x = 567,539.48
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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.