Finding the Fourth Proportional to 491,610.38, 678,486.99 and 276,792.31
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Solution
The fourth proportional to 491,610.38, 678,486.99 and 276,792.31 is: 382,009.80
Step by Step Solution
- Step 1: Write the proportion equation
491,610.38 : 678,486.99 = 276,792.31 : x - Step 2: Convert to fraction form
491,610.38/678,486.99 = 276,792.31/x - Step 3: Cross multiply
491,610.38x = 678,486.99 × 276,792.31 - Step 4: Simplify right side
491,610.38x = 187,799,981,267.05 - Step 5: Solve for x
x = 187,799,981,267.05/491,610.38 - Step 6: Final answer
x = 382,009.80
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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.