Finding the Fourth Proportional to 3,168,578.12, 4,372,638.84 and 1,718,273.12
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Solution
The fourth proportional to 3,168,578.12, 4,372,638.84 and 1,718,273.12 is: 2,371,217.46
Step by Step Solution
- Step 1: Write the proportion equation
3,168,578.12 : 4,372,638.84 = 1,718,273.12 : x - Step 2: Convert to fraction form
3,168,578.12/4,372,638.84 = 1,718,273.12/x - Step 3: Cross multiply
3,168,578.12x = 4,372,638.84 × 1,718,273.12 - Step 4: Simplify right side
3,168,578.12x = 7,513,387,760,376.79 - Step 5: Solve for x
x = 7,513,387,760,376.79/3,168,578.12 - Step 6: Final answer
x = 2,371,217.46
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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.