Finding the Fourth Proportional to 7,381,343.20, 11,072,014.80 and 7,215,455.20
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Solution
The fourth proportional to 7,381,343.20, 11,072,014.80 and 7,215,455.20 is: 10,823,182.80
Step by Step Solution
- Step 1: Write the proportion equation
7,381,343.20 : 11,072,014.80 = 7,215,455.20 : x - Step 2: Convert to fraction form
7,381,343.20/11,072,014.80 = 7,215,455.20/x - Step 3: Cross multiply
7,381,343.20x = 11,072,014.80 × 7,215,455.20 - Step 4: Simplify right side
7,381,343.20x = 79,889,626,763,136.97 - Step 5: Solve for x
x = 79,889,626,763,136.97/7,381,343.20 - Step 6: Final answer
x = 10,823,182.80
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Similar ratio
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1.5x scale
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.