Finding the Fourth Proportional to 1,222,951.14, 1,687,616.21 and 679,121.70
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Solution
The fourth proportional to 1,222,951.14, 1,687,616.21 and 679,121.70 is: 937,156.64
Step by Step Solution
- Step 1: Write the proportion equation
1,222,951.14 : 1,687,616.21 = 679,121.70 : x - Step 2: Convert to fraction form
1,222,951.14/1,687,616.21 = 679,121.70/x - Step 3: Cross multiply
1,222,951.14x = 1,687,616.21 × 679,121.70 - Step 4: Simplify right side
1,222,951.14x = 1,146,096,786,087.15 - Step 5: Solve for x
x = 1,146,096,786,087.15/1,222,951.14 - Step 6: Final answer
x = 937,156.64
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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.