Finding the Fourth Proportional to 919,236.26, 1,378,854.80 and 288,199.28
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Solution
The fourth proportional to 919,236.26, 1,378,854.80 and 288,199.28 is: 432,299.05
Step by Step Solution
- Step 1: Write the proportion equation
919,236.26 : 1,378,854.80 = 288,199.28 : x - Step 2: Convert to fraction form
919,236.26/1,378,854.80 = 288,199.28/x - Step 3: Cross multiply
919,236.26x = 1,378,854.80 × 288,199.28 - Step 4: Simplify right side
919,236.26x = 397,384,960,584.54 - Step 5: Solve for x
x = 397,384,960,584.54/919,236.26 - Step 6: Final answer
x = 432,299.05
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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.