Finding the Fourth Proportional to 7,384,217.70, 10,190,198.60 and 4,120,997.70
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Solution
The fourth proportional to 7,384,217.70, 10,190,198.60 and 4,120,997.70 is: 5,686,964.65
Step by Step Solution
- Step 1: Write the proportion equation
7,384,217.70 : 10,190,198.60 = 4,120,997.70 : x - Step 2: Convert to fraction form
7,384,217.70/10,190,198.60 = 4,120,997.70/x - Step 3: Cross multiply
7,384,217.70x = 10,190,198.60 × 4,120,997.70 - Step 4: Simplify right side
7,384,217.70x = 41,993,784,993,143.22 - Step 5: Solve for x
x = 41,993,784,993,143.22/7,384,217.70 - Step 6: Final answer
x = 5,686,964.65
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1.5x scale
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.