Finding the Fourth Proportional to 2,168,963.13, 2,991,423.84 and 1,906,757.80
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Solution
The fourth proportional to 2,168,963.13, 2,991,423.84 and 1,906,757.80 is: 2,629,791.47
Step by Step Solution
- Step 1: Write the proportion equation
2,168,963.13 : 2,991,423.84 = 1,906,757.80 : x - Step 2: Convert to fraction form
2,168,963.13/2,991,423.84 = 1,906,757.80/x - Step 3: Cross multiply
2,168,963.13x = 2,991,423.84 × 1,906,757.80 - Step 4: Simplify right side
2,168,963.13x = 5,703,920,740,025.95 - Step 5: Solve for x
x = 5,703,920,740,025.95/2,168,963.13 - Step 6: Final answer
x = 2,629,791.47
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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.