Finding the Fourth Proportional to 428,315.06, 641,939.48 and 276,110.80
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Solution
The fourth proportional to 428,315.06, 641,939.48 and 276,110.80 is: 413,822.53
Step by Step Solution
- Step 1: Write the proportion equation
428,315.06 : 641,939.48 = 276,110.80 : x - Step 2: Convert to fraction form
428,315.06/641,939.48 = 276,110.80/x - Step 3: Cross multiply
428,315.06x = 641,939.48 × 276,110.80 - Step 4: Simplify right side
428,315.06x = 177,246,423,374.38 - Step 5: Solve for x
x = 177,246,423,374.38/428,315.06 - Step 6: Final answer
x = 413,822.53
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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.