Finding the Fourth Proportional to 693,783.87, 957,716.86 and 421,939.08
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Solution
The fourth proportional to 693,783.87, 957,716.86 and 421,939.08 is: 582,455.42
Step by Step Solution
- Step 1: Write the proportion equation
693,783.87 : 957,716.86 = 421,939.08 : x - Step 2: Convert to fraction form
693,783.87/957,716.86 = 421,939.08/x - Step 3: Cross multiply
693,783.87x = 957,716.86 × 421,939.08 - Step 4: Simplify right side
693,783.87x = 404,098,170,545.18 - Step 5: Solve for x
x = 404,098,170,545.18/693,783.87 - Step 6: Final answer
x = 582,455.42
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.