Finding the Fourth Proportional to 440,728.80, 608,335.69 and 287,790.75
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Solution
The fourth proportional to 440,728.80, 608,335.69 and 287,790.75 is: 397,236.09
Step by Step Solution
- Step 1: Write the proportion equation
440,728.80 : 608,335.69 = 287,790.75 : x - Step 2: Convert to fraction form
440,728.80/608,335.69 = 287,790.75/x - Step 3: Cross multiply
440,728.80x = 608,335.69 × 287,790.75 - Step 4: Simplify right side
440,728.80x = 175,073,383,395.47 - Step 5: Solve for x
x = 175,073,383,395.47/440,728.80 - Step 6: Final answer
x = 397,236.09
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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.