Finding the Fourth Proportional to 1,720,121.80, 2,579,261.10 and 721,721.80
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Solution
The fourth proportional to 1,720,121.80, 2,579,261.10 and 721,721.80 is: 1,082,196.02
Step by Step Solution
- Step 1: Write the proportion equation
1,720,121.80 : 2,579,261.10 = 721,721.80 : x - Step 2: Convert to fraction form
1,720,121.80/2,579,261.10 = 721,721.80/x - Step 3: Cross multiply
1,720,121.80x = 2,579,261.10 × 721,721.80 - Step 4: Simplify right side
1,720,121.80x = 1,861,508,963,761.98 - Step 5: Solve for x
x = 1,861,508,963,761.98/1,720,121.80 - Step 6: Final answer
x = 1,082,196.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.