Finding the Fourth Proportional to 448,121.20, 672,181.80 and 412,691.80
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Solution
The fourth proportional to 448,121.20, 672,181.80 and 412,691.80 is: 619,037.70
Step by Step Solution
- Step 1: Write the proportion equation
448,121.20 : 672,181.80 = 412,691.80 : x - Step 2: Convert to fraction form
448,121.20/672,181.80 = 412,691.80/x - Step 3: Cross multiply
448,121.20x = 672,181.80 × 412,691.80 - Step 4: Simplify right side
448,121.20x = 277,403,916,969.24 - Step 5: Solve for x
x = 277,403,916,969.24/448,121.20 - Step 6: Final answer
x = 619,037.70
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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.