Finding the Fourth Proportional to 512,129.80, 768,194.70 and 512,129.80
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Solution
The fourth proportional to 512,129.80, 768,194.70 and 512,129.80 is: 768,194.70
Step by Step Solution
- Step 1: Write the proportion equation
512,129.80 : 768,194.70 = 512,129.80 : x - Step 2: Convert to fraction form
512,129.80/768,194.70 = 512,129.80/x - Step 3: Cross multiply
512,129.80x = 768,194.70 × 512,129.80 - Step 4: Simplify right side
512,129.80x = 393,415,398,072.06 - Step 5: Solve for x
x = 393,415,398,072.06/512,129.80 - Step 6: Final answer
x = 768,194.70
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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.