Finding the Fourth Proportional to 7,805,243.28, 11,707,865.04 and 5,145,229.20
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Solution
The fourth proportional to 7,805,243.28, 11,707,865.04 and 5,145,229.20 is: 7,717,843.88
Step by Step Solution
- Step 1: Write the proportion equation
7,805,243.28 : 11,707,865.04 = 5,145,229.20 : x - Step 2: Convert to fraction form
7,805,243.28/11,707,865.04 = 5,145,229.20/x - Step 3: Cross multiply
7,805,243.28x = 11,707,865.04 × 5,145,229.20 - Step 4: Simplify right side
7,805,243.28x = 60,239,649,073,467.16 - Step 5: Solve for x
x = 60,239,649,073,467.16/7,805,243.28 - Step 6: Final answer
x = 7,717,843.88
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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.