Finding the Fourth Proportional to 491,418.35, 678,045.11 and 276,479.99
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Solution
The fourth proportional to 491,418.35, 678,045.11 and 276,479.99 is: 381,479.25
Step by Step Solution
- Step 1: Write the proportion equation
491,418.35 : 678,045.11 = 276,479.99 : x - Step 2: Convert to fraction form
491,418.35/678,045.11 = 276,479.99/x - Step 3: Cross multiply
491,418.35x = 678,045.11 × 276,479.99 - Step 4: Simplify right side
491,418.35x = 187,465,900,459.72 - Step 5: Solve for x
x = 187,465,900,459.72/491,418.35 - Step 6: Final answer
x = 381,479.25
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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.