Finding the Fourth Proportional to 491,442.21, 678,212.07 and 276,596.19
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Solution
The fourth proportional to 491,442.21, 678,212.07 and 276,596.19 is: 381,715.02
Step by Step Solution
- Step 1: Write the proportion equation
491,442.21 : 678,212.07 = 276,596.19 : x - Step 2: Convert to fraction form
491,442.21/678,212.07 = 276,596.19/x - Step 3: Cross multiply
491,442.21x = 678,212.07 × 276,596.19 - Step 4: Simplify right side
491,442.21x = 187,590,873,536.78 - Step 5: Solve for x
x = 187,590,873,536.78/491,442.21 - Step 6: Final answer
x = 381,715.02
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1.5x scale
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.