Finding the Fourth Proportional to 2,168,589.78, 2,992,731.10 and 1,308,982.14
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Solution
The fourth proportional to 2,168,589.78, 2,992,731.10 and 1,308,982.14 is: 1,806,441.95
Step by Step Solution
- Step 1: Write the proportion equation
2,168,589.78 : 2,992,731.10 = 1,308,982.14 : x - Step 2: Convert to fraction form
2,168,589.78/2,992,731.10 = 1,308,982.14/x - Step 3: Cross multiply
2,168,589.78x = 2,992,731.10 × 1,308,982.14 - Step 4: Simplify right side
2,168,589.78x = 3,917,431,556,450.10 - Step 5: Solve for x
x = 3,917,431,556,450.10/2,168,589.78 - Step 6: Final answer
x = 1,806,441.95
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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.