Finding the Fourth Proportional to 460,433.10, 690,125.92 and 280,121.05
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Solution
The fourth proportional to 460,433.10, 690,125.92 and 280,121.05 is: 419,862.95
Step by Step Solution
- Step 1: Write the proportion equation
460,433.10 : 690,125.92 = 280,121.05 : x - Step 2: Convert to fraction form
460,433.10/690,125.92 = 280,121.05/x - Step 3: Cross multiply
460,433.10x = 690,125.92 × 280,121.05 - Step 4: Simplify right side
460,433.10x = 193,318,797,342.62 - Step 5: Solve for x
x = 193,318,797,342.62/460,433.10 - Step 6: Final answer
x = 419,862.95
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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.