Finding the Fourth Proportional to 491,641.20, 678,435.84 and 276,772.68
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Solution
The fourth proportional to 491,641.20, 678,435.84 and 276,772.68 is: 381,929.96
Step by Step Solution
- Step 1: Write the proportion equation
491,641.20 : 678,435.84 = 276,772.68 : x - Step 2: Convert to fraction form
491,641.20/678,435.84 = 276,772.68/x - Step 3: Cross multiply
491,641.20x = 678,435.84 × 276,772.68 - Step 4: Simplify right side
491,641.20x = 187,772,505,644.85 - Step 5: Solve for x
x = 187,772,505,644.85/491,641.20 - Step 6: Final answer
x = 381,929.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.