Finding the Fourth Proportional to 5,514,930.80, 8,279,135.40 and 3,120,441.20
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Solution
The fourth proportional to 5,514,930.80, 8,279,135.40 and 3,120,441.20 is: 4,684,474.95
Step by Step Solution
- Step 1: Write the proportion equation
5,514,930.80 : 8,279,135.40 = 3,120,441.20 : x - Step 2: Convert to fraction form
5,514,930.80/8,279,135.40 = 3,120,441.20/x - Step 3: Cross multiply
5,514,930.80x = 8,279,135.40 × 3,120,441.20 - Step 4: Simplify right side
5,514,930.80x = 25,834,555,202,538.48 - Step 5: Solve for x
x = 25,834,555,202,538.48/5,514,930.80 - Step 6: Final answer
x = 4,684,474.95
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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.