Finding the Fourth Proportional to 758,939.79, 1,138,409.68 and 285,731.31
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Solution
The fourth proportional to 758,939.79, 1,138,409.68 and 285,731.31 is: 428,596.96
Step by Step Solution
- Step 1: Write the proportion equation
758,939.79 : 1,138,409.68 = 285,731.31 : x - Step 2: Convert to fraction form
758,939.79/1,138,409.68 = 285,731.31/x - Step 3: Cross multiply
758,939.79x = 1,138,409.68 × 285,731.31 - Step 4: Simplify right side
758,939.79x = 325,279,289,183.08 - Step 5: Solve for x
x = 325,279,289,183.08/758,939.79 - Step 6: Final answer
x = 428,596.96
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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.