Finding the Fourth Proportional to 656,871.70, 985,696.35 and 432,879.70
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Solution
The fourth proportional to 656,871.70, 985,696.35 and 432,879.70 is: 649,575.77
Step by Step Solution
- Step 1: Write the proportion equation
656,871.70 : 985,696.35 = 432,879.70 : x - Step 2: Convert to fraction form
656,871.70/985,696.35 = 432,879.70/x - Step 3: Cross multiply
656,871.70x = 985,696.35 × 432,879.70 - Step 4: Simplify right side
656,871.70x = 426,687,940,279.10 - Step 5: Solve for x
x = 426,687,940,279.10/656,871.70 - Step 6: Final answer
x = 649,575.77
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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.