Finding the Fourth Proportional to 644,752.80, 967,129.20 and 445,687.20
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Solution
The fourth proportional to 644,752.80, 967,129.20 and 445,687.20 is: 668,530.80
Step by Step Solution
- Step 1: Write the proportion equation
644,752.80 : 967,129.20 = 445,687.20 : x - Step 2: Convert to fraction form
644,752.80/967,129.20 = 445,687.20/x - Step 3: Cross multiply
644,752.80x = 967,129.20 × 445,687.20 - Step 4: Simplify right side
644,752.80x = 431,037,105,186.24 - Step 5: Solve for x
x = 431,037,105,186.24/644,752.80 - Step 6: Final answer
x = 668,530.80
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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.