Finding the Fourth Proportional to 685,440.70, 1,027,366.17 and 405,193.66
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Solution
The fourth proportional to 685,440.70, 1,027,366.17 and 405,193.66 is: 607,320.60
Step by Step Solution
- Step 1: Write the proportion equation
685,440.70 : 1,027,366.17 = 405,193.66 : x - Step 2: Convert to fraction form
685,440.70/1,027,366.17 = 405,193.66/x - Step 3: Cross multiply
685,440.70x = 1,027,366.17 × 405,193.66 - Step 4: Simplify right side
685,440.70x = 416,282,258,582.48 - Step 5: Solve for x
x = 416,282,258,582.48/685,440.70 - Step 6: Final answer
x = 607,320.60
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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.