Finding the Fourth Proportional to 7,040,722.24, 9,715,936.80 and 3,821,389.12
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Solution
The fourth proportional to 7,040,722.24, 9,715,936.80 and 3,821,389.12 is: 5,273,375.93
Step by Step Solution
- Step 1: Write the proportion equation
7,040,722.24 : 9,715,936.80 = 3,821,389.12 : x - Step 2: Convert to fraction form
7,040,722.24/9,715,936.80 = 3,821,389.12/x - Step 3: Cross multiply
7,040,722.24x = 9,715,936.80 × 3,821,389.12 - Step 4: Simplify right side
7,040,722.24x = 37,128,375,178,127.62 - Step 5: Solve for x
x = 37,128,375,178,127.62/7,040,722.24 - Step 6: Final answer
x = 5,273,375.93
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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.