Finding the Fourth Proportional to 3,171,872.13, 4,377,188.34 and 1,721,568.09
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Solution
The fourth proportional to 3,171,872.13, 4,377,188.34 and 1,721,568.09 is: 2,375,766.57
Step by Step Solution
- Step 1: Write the proportion equation
3,171,872.13 : 4,377,188.34 = 1,721,568.09 : x - Step 2: Convert to fraction form
3,171,872.13/4,377,188.34 = 1,721,568.09/x - Step 3: Cross multiply
3,171,872.13x = 4,377,188.34 × 1,721,568.09 - Step 4: Simplify right side
3,171,872.13x = 7,535,627,770,064.07 - Step 5: Solve for x
x = 7,535,627,770,064.07/3,171,872.13 - Step 6: Final answer
x = 2,375,766.57
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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.