Finding the Fourth Proportional to 428,313.07, 641,936.49 and 276,108.80
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Solution
The fourth proportional to 428,313.07, 641,936.49 and 276,108.80 is: 413,819.54
Step by Step Solution
- Step 1: Write the proportion equation
428,313.07 : 641,936.49 = 276,108.80 : x - Step 2: Convert to fraction form
428,313.07/641,936.49 = 276,108.80/x - Step 3: Cross multiply
428,313.07x = 641,936.49 × 276,108.80 - Step 4: Simplify right side
428,313.07x = 177,244,314,849.03 - Step 5: Solve for x
x = 177,244,314,849.03/428,313.07 - Step 6: Final answer
x = 413,819.54
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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.