Finding the Fourth Proportional to 398,546.80, 548,874.84 and 389,837.68
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Solution
The fourth proportional to 398,546.80, 548,874.84 and 389,837.68 is: 536,880.72
Step by Step Solution
- Step 1: Write the proportion equation
398,546.80 : 548,874.84 = 389,837.68 : x - Step 2: Convert to fraction form
398,546.80/548,874.84 = 389,837.68/x - Step 3: Cross multiply
398,546.80x = 548,874.84 × 389,837.68 - Step 4: Simplify right side
398,546.80x = 213,972,094,235.97 - Step 5: Solve for x
x = 213,972,094,235.97/398,546.80 - Step 6: Final answer
x = 536,880.72
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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.