Finding the Fourth Proportional to 7,412,422.20, 11,118,633.30 and 5,247,583.80
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Solution
The fourth proportional to 7,412,422.20, 11,118,633.30 and 5,247,583.80 is: 7,871,375.70
Step by Step Solution
- Step 1: Write the proportion equation
7,412,422.20 : 11,118,633.30 = 5,247,583.80 : x - Step 2: Convert to fraction form
7,412,422.20/11,118,633.30 = 5,247,583.80/x - Step 3: Cross multiply
7,412,422.20x = 11,118,633.30 × 5,247,583.80 - Step 4: Simplify right side
7,412,422.20x = 58,345,959,983,220.54 - Step 5: Solve for x
x = 58,345,959,983,220.54/7,412,422.20 - Step 6: Final answer
x = 7,871,375.70
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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.