Finding the Fourth Proportional to 490,517.95, 677,099.75 and 286,635.14
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Solution
The fourth proportional to 490,517.95, 677,099.75 and 286,635.14 is: 395,664.59
Step by Step Solution
- Step 1: Write the proportion equation
490,517.95 : 677,099.75 = 286,635.14 : x - Step 2: Convert to fraction form
490,517.95/677,099.75 = 286,635.14/x - Step 3: Cross multiply
490,517.95x = 677,099.75 × 286,635.14 - Step 4: Simplify right side
490,517.95x = 194,080,581,635.22 - Step 5: Solve for x
x = 194,080,581,635.22/490,517.95 - Step 6: Final answer
x = 395,664.59
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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.