Finding the Fourth Proportional to 529,441.12, 730,621.86 and 287,717.68
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Solution
The fourth proportional to 529,441.12, 730,621.86 and 287,717.68 is: 397,046.66
Step by Step Solution
- Step 1: Write the proportion equation
529,441.12 : 730,621.86 = 287,717.68 : x - Step 2: Convert to fraction form
529,441.12/730,621.86 = 287,717.68/x - Step 3: Cross multiply
529,441.12x = 730,621.86 × 287,717.68 - Step 4: Simplify right side
529,441.12x = 210,212,826,516.49 - Step 5: Solve for x
x = 210,212,826,516.49/529,441.12 - Step 6: Final answer
x = 397,046.66
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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.