Finding the Fourth Proportional to 512,207.40, 768,311.10 and 246,486.90
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Solution
The fourth proportional to 512,207.40, 768,311.10 and 246,486.90 is: 369,730.35
Step by Step Solution
- Step 1: Write the proportion equation
512,207.40 : 768,311.10 = 246,486.90 : x - Step 2: Convert to fraction form
512,207.40/768,311.10 = 246,486.90/x - Step 3: Cross multiply
512,207.40x = 768,311.10 × 246,486.90 - Step 4: Simplify right side
512,207.40x = 189,378,621,274.59 - Step 5: Solve for x
x = 189,378,621,274.59/512,207.40 - Step 6: Final answer
x = 369,730.35
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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.