Finding the Fourth Proportional to 543,239.20, 814,858.80 and 431,264.80
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Solution
The fourth proportional to 543,239.20, 814,858.80 and 431,264.80 is: 646,897.20
Step by Step Solution
- Step 1: Write the proportion equation
543,239.20 : 814,858.80 = 431,264.80 : x - Step 2: Convert to fraction form
543,239.20/814,858.80 = 431,264.80/x - Step 3: Cross multiply
543,239.20x = 814,858.80 × 431,264.80 - Step 4: Simplify right side
543,239.20x = 351,419,917,410.24 - Step 5: Solve for x
x = 351,419,917,410.24/543,239.20 - Step 6: Final answer
x = 646,897.20
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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.