Finding the Fourth Proportional to 665,261.20, 997,891.80 and 310,311.10
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Solution
The fourth proportional to 665,261.20, 997,891.80 and 310,311.10 is: 465,466.65
Step by Step Solution
- Step 1: Write the proportion equation
665,261.20 : 997,891.80 = 310,311.10 : x - Step 2: Convert to fraction form
665,261.20/997,891.80 = 310,311.10/x - Step 3: Cross multiply
665,261.20x = 997,891.80 × 310,311.10 - Step 4: Simplify right side
665,261.20x = 309,656,902,138.98 - Step 5: Solve for x
x = 309,656,902,138.98/665,261.20 - Step 6: Final answer
x = 465,466.65
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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.