Finding the Fourth Proportional to 512,420.06, 768,630.09 and 246,014.30
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Solution
The fourth proportional to 512,420.06, 768,630.09 and 246,014.30 is: 369,021.45
Step by Step Solution
- Step 1: Write the proportion equation
512,420.06 : 768,630.09 = 246,014.30 : x - Step 2: Convert to fraction form
512,420.06/768,630.09 = 246,014.30/x - Step 3: Cross multiply
512,420.06x = 768,630.09 × 246,014.30 - Step 4: Simplify right side
512,420.06x = 189,093,993,550.29 - Step 5: Solve for x
x = 189,093,993,550.29/512,420.06 - Step 6: Final answer
x = 369,021.45
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Double scale
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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.