Finding the Fourth Proportional to 5,311,793.20, 7,971,527.94 and 2,115,077.08
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Solution
The fourth proportional to 5,311,793.20, 7,971,527.94 and 2,115,077.08 is: 3,174,143.91
Step by Step Solution
- Step 1: Write the proportion equation
5,311,793.20 : 7,971,527.94 = 2,115,077.08 : x - Step 2: Convert to fraction form
5,311,793.20/7,971,527.94 = 2,115,077.08/x - Step 3: Cross multiply
5,311,793.20x = 7,971,527.94 × 2,115,077.08 - Step 4: Simplify right side
5,311,793.20x = 16,860,396,038,473.62 - Step 5: Solve for x
x = 16,860,396,038,473.62/5,311,793.20 - Step 6: Final answer
x = 3,174,143.91
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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.