Finding the Fourth Proportional to 870,391.49, 1,305,958.75 and 491,596.61
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Solution
The fourth proportional to 870,391.49, 1,305,958.75 and 491,596.61 is: 737,604.74
Step by Step Solution
- Step 1: Write the proportion equation
870,391.49 : 1,305,958.75 = 491,596.61 : x - Step 2: Convert to fraction form
870,391.49/1,305,958.75 = 491,596.61/x - Step 3: Cross multiply
870,391.49x = 1,305,958.75 × 491,596.61 - Step 4: Simplify right side
870,391.49x = 642,004,886,541.05 - Step 5: Solve for x
x = 642,004,886,541.05/870,391.49 - Step 6: Final answer
x = 737,604.74
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1.5x scale
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.