Finding the Fourth Proportional to 428,585.76, 642,921.84 and 113,064.48
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Solution
The fourth proportional to 428,585.76, 642,921.84 and 113,064.48 is: 169,608.12
Step by Step Solution
- Step 1: Write the proportion equation
428,585.76 : 642,921.84 = 113,064.48 : x - Step 2: Convert to fraction form
428,585.76/642,921.84 = 113,064.48/x - Step 3: Cross multiply
428,585.76x = 642,921.84 × 113,064.48 - Step 4: Simplify right side
428,585.76x = 72,691,623,520.24 - Step 5: Solve for x
x = 72,691,623,520.24/428,585.76 - Step 6: Final answer
x = 169,608.12
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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.