Finding the Fourth Proportional to 1,396,863.40, 2,093,912.70 and 686,309.80
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Solution
The fourth proportional to 1,396,863.40, 2,093,912.70 and 686,309.80 is: 1,028,785.50
Step by Step Solution
- Step 1: Write the proportion equation
1,396,863.40 : 2,093,912.70 = 686,309.80 : x - Step 2: Convert to fraction form
1,396,863.40/2,093,912.70 = 686,309.80/x - Step 3: Cross multiply
1,396,863.40x = 2,093,912.70 × 686,309.80 - Step 4: Simplify right side
1,396,863.40x = 1,437,072,806,354.46 - Step 5: Solve for x
x = 1,437,072,806,354.46/1,396,863.40 - Step 6: Final answer
x = 1,028,785.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.