Finding the Fourth Proportional to 3,171,991.92, 4,377,231.54 and 1,721,656.14
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Solution
The fourth proportional to 3,171,991.92, 4,377,231.54 and 1,721,656.14 is: 2,375,821.80
Step by Step Solution
- Step 1: Write the proportion equation
3,171,991.92 : 4,377,231.54 = 1,721,656.14 : x - Step 2: Convert to fraction form
3,171,991.92/4,377,231.54 = 1,721,656.14/x - Step 3: Cross multiply
3,171,991.92x = 4,377,231.54 × 1,721,656.14 - Step 4: Simplify right side
3,171,991.92x = 7,536,087,557,042.66 - Step 5: Solve for x
x = 7,536,087,557,042.66/3,171,991.92 - Step 6: Final answer
x = 2,375,821.80
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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.