Finding the Fourth Proportional to 5,320,405.12, 7,981,728.50 and 1,725,891.40
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Solution
The fourth proportional to 5,320,405.12, 7,981,728.50 and 1,725,891.40 is: 2,589,200.68
Step by Step Solution
- Step 1: Write the proportion equation
5,320,405.12 : 7,981,728.50 = 1,725,891.40 : x - Step 2: Convert to fraction form
5,320,405.12/7,981,728.50 = 1,725,891.40/x - Step 3: Cross multiply
5,320,405.12x = 7,981,728.50 × 1,725,891.40 - Step 4: Simplify right side
5,320,405.12x = 13,775,596,575,284.90 - Step 5: Solve for x
x = 13,775,596,575,284.90/5,320,405.12 - Step 6: Final answer
x = 2,589,200.68
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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.