Finding the Fourth Proportional to 1,586,433.76, 2,189,278.58 and 861,281.46
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Solution
The fourth proportional to 1,586,433.76, 2,189,278.58 and 861,281.46 is: 1,188,568.41
Step by Step Solution
- Step 1: Write the proportion equation
1,586,433.76 : 2,189,278.58 = 861,281.46 : x - Step 2: Convert to fraction form
1,586,433.76/2,189,278.58 = 861,281.46/x - Step 3: Cross multiply
1,586,433.76x = 2,189,278.58 × 861,281.46 - Step 4: Simplify right side
1,586,433.76x = 1,885,585,051,729.13 - Step 5: Solve for x
x = 1,885,585,051,729.13/1,586,433.76 - Step 6: Final answer
x = 1,188,568.41
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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.