Finding the Fourth Proportional to 642,195.87, 886,290.28 and 355,716.17
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Solution
The fourth proportional to 642,195.87, 886,290.28 and 355,716.17 is: 490,921.54
Step by Step Solution
- Step 1: Write the proportion equation
642,195.87 : 886,290.28 = 355,716.17 : x - Step 2: Convert to fraction form
642,195.87/886,290.28 = 355,716.17/x - Step 3: Cross multiply
642,195.87x = 886,290.28 × 355,716.17 - Step 4: Simplify right side
642,195.87x = 315,267,785,236.26 - Step 5: Solve for x
x = 315,267,785,236.26/642,195.87 - Step 6: Final answer
x = 490,921.54
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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.