Finding the Fourth Proportional to 820,639.14, 1,132,670.97 and 481,216.74
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Solution
The fourth proportional to 820,639.14, 1,132,670.97 and 481,216.74 is: 664,189.90
Step by Step Solution
- Step 1: Write the proportion equation
820,639.14 : 1,132,670.97 = 481,216.74 : x - Step 2: Convert to fraction form
820,639.14/1,132,670.97 = 481,216.74/x - Step 3: Cross multiply
820,639.14x = 1,132,670.97 × 481,216.74 - Step 4: Simplify right side
820,639.14x = 545,060,231,676.04 - Step 5: Solve for x
x = 545,060,231,676.04/820,639.14 - Step 6: Final answer
x = 664,189.90
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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.