Finding the Fourth Proportional to 491,905.21, 678,850.27 and 274,114.18
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Solution
The fourth proportional to 491,905.21, 678,850.27 and 274,114.18 is: 378,289.32
Step by Step Solution
- Step 1: Write the proportion equation
491,905.21 : 678,850.27 = 274,114.18 : x - Step 2: Convert to fraction form
491,905.21/678,850.27 = 274,114.18/x - Step 3: Cross multiply
491,905.21x = 678,850.27 × 274,114.18 - Step 4: Simplify right side
491,905.21x = 186,082,484,670.46 - Step 5: Solve for x
x = 186,082,484,670.46/491,905.21 - Step 6: Final answer
x = 378,289.32
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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.