Finding the Fourth Proportional to 491,839.20, 678,750.75 and 276,986.70
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Solution
The fourth proportional to 491,839.20, 678,750.75 and 276,986.70 is: 382,248.77
Step by Step Solution
- Step 1: Write the proportion equation
491,839.20 : 678,750.75 = 276,986.70 : x - Step 2: Convert to fraction form
491,839.20/678,750.75 = 276,986.70/x - Step 3: Cross multiply
491,839.20x = 678,750.75 × 276,986.70 - Step 4: Simplify right side
491,839.20x = 188,004,930,365.03 - Step 5: Solve for x
x = 188,004,930,365.03/491,839.20 - Step 6: Final answer
x = 382,248.77
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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.