Finding the Fourth Proportional to 512,356.20, 768,534.30 and 412,711.02
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Solution
The fourth proportional to 512,356.20, 768,534.30 and 412,711.02 is: 619,066.53
Step by Step Solution
- Step 1: Write the proportion equation
512,356.20 : 768,534.30 = 412,711.02 : x - Step 2: Convert to fraction form
512,356.20/768,534.30 = 412,711.02/x - Step 3: Cross multiply
512,356.20x = 768,534.30 × 412,711.02 - Step 4: Simplify right side
512,356.20x = 317,182,574,857.99 - Step 5: Solve for x
x = 317,182,574,857.99/512,356.20 - Step 6: Final answer
x = 619,066.53
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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.