Finding the Fourth Proportional to 420,288.06, 629,906.73 and 270,128.70
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Solution
The fourth proportional to 420,288.06, 629,906.73 and 270,128.70 is: 404,855.39
Step by Step Solution
- Step 1: Write the proportion equation
420,288.06 : 629,906.73 = 270,128.70 : x - Step 2: Convert to fraction form
420,288.06/629,906.73 = 270,128.70/x - Step 3: Cross multiply
420,288.06x = 629,906.73 × 270,128.70 - Step 4: Simplify right side
420,288.06x = 170,155,886,096.15 - Step 5: Solve for x
x = 170,155,886,096.15/420,288.06 - Step 6: Final answer
x = 404,855.39
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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.