Finding the Fourth Proportional to 656,690.10, 985,035.15 and 257,198.10
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Solution
The fourth proportional to 656,690.10, 985,035.15 and 257,198.10 is: 385,797.15
Step by Step Solution
- Step 1: Write the proportion equation
656,690.10 : 985,035.15 = 257,198.10 : x - Step 2: Convert to fraction form
656,690.10/985,035.15 = 257,198.10/x - Step 3: Cross multiply
656,690.10x = 985,035.15 × 257,198.10 - Step 4: Simplify right side
656,690.10x = 253,349,169,013.22 - Step 5: Solve for x
x = 253,349,169,013.22/656,690.10 - Step 6: Final answer
x = 385,797.15
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Similar ratio
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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.