Finding the Fourth Proportional to 720,639.36, 1,080,375.84 and 300,229.92
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Solution
The fourth proportional to 720,639.36, 1,080,375.84 and 300,229.92 is: 450,101.91
Step by Step Solution
- Step 1: Write the proportion equation
720,639.36 : 1,080,375.84 = 300,229.92 : x - Step 2: Convert to fraction form
720,639.36/1,080,375.84 = 300,229.92/x - Step 3: Cross multiply
720,639.36x = 1,080,375.84 × 300,229.92 - Step 4: Simplify right side
720,639.36x = 324,361,152,013.13 - Step 5: Solve for x
x = 324,361,152,013.13/720,639.36 - Step 6: Final answer
x = 450,101.91
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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.