Finding the Fourth Proportional to 1,138,620.26, 1,708,229.46 and 409,217.09
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Solution
The fourth proportional to 1,138,620.26, 1,708,229.46 and 409,217.09 is: 613,933.11
Step by Step Solution
- Step 1: Write the proportion equation
1,138,620.26 : 1,708,229.46 = 409,217.09 : x - Step 2: Convert to fraction form
1,138,620.26/1,708,229.46 = 409,217.09/x - Step 3: Cross multiply
1,138,620.26x = 1,708,229.46 × 409,217.09 - Step 4: Simplify right side
1,138,620.26x = 699,036,678,086.24 - Step 5: Solve for x
x = 699,036,678,086.24/1,138,620.26 - Step 6: Final answer
x = 613,933.11
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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.