Finding the Fourth Proportional to 5,146,540.14, 7,103,077.20 and 2,855,438.94
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Solution
The fourth proportional to 5,146,540.14, 7,103,077.20 and 2,855,438.94 is: 3,940,978.34
Step by Step Solution
- Step 1: Write the proportion equation
5,146,540.14 : 7,103,077.20 = 2,855,438.94 : x - Step 2: Convert to fraction form
5,146,540.14/7,103,077.20 = 2,855,438.94/x - Step 3: Cross multiply
5,146,540.14x = 7,103,077.20 × 2,855,438.94 - Step 4: Simplify right side
5,146,540.14x = 20,282,403,230,706.17 - Step 5: Solve for x
x = 20,282,403,230,706.17/5,146,540.14 - Step 6: Final answer
x = 3,940,978.34
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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.