Finding the Fourth Proportional to 4,178,442.63, 5,764,128.67 and 2,728,986.51
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Solution
The fourth proportional to 4,178,442.63, 5,764,128.67 and 2,728,986.51 is: 3,764,615.38
Step by Step Solution
- Step 1: Write the proportion equation
4,178,442.63 : 5,764,128.67 = 2,728,986.51 : x - Step 2: Convert to fraction form
4,178,442.63/5,764,128.67 = 2,728,986.51/x - Step 3: Cross multiply
4,178,442.63x = 5,764,128.67 × 2,728,986.51 - Step 4: Simplify right side
4,178,442.63x = 15,730,229,382,900.03 - Step 5: Solve for x
x = 15,730,229,382,900.03/4,178,442.63 - Step 6: Final answer
x = 3,764,615.38
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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.