Finding the Fourth Proportional to 1,543,205.88, 2,129,661.90 and 864,280.44
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Solution
The fourth proportional to 1,543,205.88, 2,129,661.90 and 864,280.44 is: 1,192,728.17
Step by Step Solution
- Step 1: Write the proportion equation
1,543,205.88 : 2,129,661.90 = 864,280.44 : x - Step 2: Convert to fraction form
1,543,205.88/2,129,661.90 = 864,280.44/x - Step 3: Cross multiply
1,543,205.88x = 2,129,661.90 × 864,280.44 - Step 4: Simplify right side
1,543,205.88x = 1,840,625,123,983.24 - Step 5: Solve for x
x = 1,840,625,123,983.24/1,543,205.88 - Step 6: Final answer
x = 1,192,728.17
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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.