Finding the Fourth Proportional to 804,739.20, 1,207,108.80 and 431,491.20
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Solution
The fourth proportional to 804,739.20, 1,207,108.80 and 431,491.20 is: 647,236.80
Step by Step Solution
- Step 1: Write the proportion equation
804,739.20 : 1,207,108.80 = 431,491.20 : x - Step 2: Convert to fraction form
804,739.20/1,207,108.80 = 431,491.20/x - Step 3: Cross multiply
804,739.20x = 1,207,108.80 × 431,491.20 - Step 4: Simplify right side
804,739.20x = 520,856,824,642.56 - Step 5: Solve for x
x = 520,856,824,642.56/804,739.20 - Step 6: Final answer
x = 647,236.80
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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.