Finding the Fourth Proportional to 7,145,857.76, 9,861,163.98 and 3,882,722.72
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Solution
The fourth proportional to 7,145,857.76, 9,861,163.98 and 3,882,722.72 is: 5,358,092.30
Step by Step Solution
- Step 1: Write the proportion equation
7,145,857.76 : 9,861,163.98 = 3,882,722.72 : x - Step 2: Convert to fraction form
7,145,857.76/9,861,163.98 = 3,882,722.72/x - Step 3: Cross multiply
7,145,857.76x = 9,861,163.98 × 3,882,722.72 - Step 4: Simplify right side
7,145,857.76x = 38,288,165,430,791.63 - Step 5: Solve for x
x = 38,288,165,430,791.63/7,145,857.76 - Step 6: Final answer
x = 5,358,092.30
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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.