Finding the Fourth Proportional to 628,028.46, 866,660.70 and 356,121.18
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Solution
The fourth proportional to 628,028.46, 866,660.70 and 356,121.18 is: 491,436.70
Step by Step Solution
- Step 1: Write the proportion equation
628,028.46 : 866,660.70 = 356,121.18 : x - Step 2: Convert to fraction form
628,028.46/866,660.70 = 356,121.18/x - Step 3: Cross multiply
628,028.46x = 866,660.70 × 356,121.18 - Step 4: Simplify right side
628,028.46x = 308,636,231,143.63 - Step 5: Solve for x
x = 308,636,231,143.63/628,028.46 - Step 6: Final answer
x = 491,436.70
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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.