Finding the Fourth Proportional to 491,617.19, 678,444.84 and 276,765.41
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Solution
The fourth proportional to 491,617.19, 678,444.84 and 276,765.41 is: 381,943.65
Step by Step Solution
- Step 1: Write the proportion equation
491,617.19 : 678,444.84 = 276,765.41 : x - Step 2: Convert to fraction form
491,617.19/678,444.84 = 276,765.41/x - Step 3: Cross multiply
491,617.19x = 678,444.84 × 276,765.41 - Step 4: Simplify right side
491,617.19x = 187,770,060,912.76 - Step 5: Solve for x
x = 187,770,060,912.76/491,617.19 - Step 6: Final answer
x = 381,943.65
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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.