Finding the Fourth Proportional to 1,121,414.70, 1,682,145.88 and 401,803.28
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Solution
The fourth proportional to 1,121,414.70, 1,682,145.88 and 401,803.28 is: 602,713.45
Step by Step Solution
- Step 1: Write the proportion equation
1,121,414.70 : 1,682,145.88 = 401,803.28 : x - Step 2: Convert to fraction form
1,121,414.70/1,682,145.88 = 401,803.28/x - Step 3: Cross multiply
1,121,414.70x = 1,682,145.88 × 401,803.28 - Step 4: Simplify right side
1,121,414.70x = 675,891,722,607.25 - Step 5: Solve for x
x = 675,891,722,607.25/1,121,414.70 - Step 6: Final answer
x = 602,713.45
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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.