Finding the Fourth Proportional to 3,889,129.14, 5,366,990.34 and 2,170,147.14
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Solution
The fourth proportional to 3,889,129.14, 5,366,990.34 and 2,170,147.14 is: 2,994,798.66
Step by Step Solution
- Step 1: Write the proportion equation
3,889,129.14 : 5,366,990.34 = 2,170,147.14 : x - Step 2: Convert to fraction form
3,889,129.14/5,366,990.34 = 2,170,147.14/x - Step 3: Cross multiply
3,889,129.14x = 5,366,990.34 × 2,170,147.14 - Step 4: Simplify right side
3,889,129.14x = 11,647,158,736,758.63 - Step 5: Solve for x
x = 11,647,158,736,758.63/3,889,129.14 - Step 6: Final answer
x = 2,994,798.66
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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.