Finding the Fourth Proportional to 685,857.70, 1,029,450.57 and 331,120.63
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Solution
The fourth proportional to 685,857.70, 1,029,450.57 and 331,120.63 is: 497,001.52
Step by Step Solution
- Step 1: Write the proportion equation
685,857.70 : 1,029,450.57 = 331,120.63 : x - Step 2: Convert to fraction form
685,857.70/1,029,450.57 = 331,120.63/x - Step 3: Cross multiply
685,857.70x = 1,029,450.57 × 331,120.63 - Step 4: Simplify right side
685,857.70x = 340,872,321,292.26 - Step 5: Solve for x
x = 340,872,321,292.26/685,857.70 - Step 6: Final answer
x = 497,001.52
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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.