Finding the Fourth Proportional to 3,900,271.46, 5,382,343.74 and 2,181,390.70
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Solution
The fourth proportional to 3,900,271.46, 5,382,343.74 and 2,181,390.70 is: 3,010,301.90
Step by Step Solution
- Step 1: Write the proportion equation
3,900,271.46 : 5,382,343.74 = 2,181,390.70 : x - Step 2: Convert to fraction form
3,900,271.46/5,382,343.74 = 2,181,390.70/x - Step 3: Cross multiply
3,900,271.46x = 5,382,343.74 × 2,181,390.70 - Step 4: Simplify right side
3,900,271.46x = 11,740,994,578,639.22 - Step 5: Solve for x
x = 11,740,994,578,639.22/3,900,271.46 - Step 6: Final answer
x = 3,010,301.90
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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.