Finding the Fourth Proportional to 3,879,509.46, 5,353,723.20 and 2,160,629.88
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Solution
The fourth proportional to 3,879,509.46, 5,353,723.20 and 2,160,629.88 is: 2,981,669.32
Step by Step Solution
- Step 1: Write the proportion equation
3,879,509.46 : 5,353,723.20 = 2,160,629.88 : x - Step 2: Convert to fraction form
3,879,509.46/5,353,723.20 = 2,160,629.88/x - Step 3: Cross multiply
3,879,509.46x = 5,353,723.20 × 2,160,629.88 - Step 4: Simplify right side
3,879,509.46x = 11,567,414,315,169.21 - Step 5: Solve for x
x = 11,567,414,315,169.21/3,879,509.46 - Step 6: Final answer
x = 2,981,669.32
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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.