Finding the Fourth Proportional to 1,398,512.28, 1,929,400.38 and 786,524.68
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Solution
The fourth proportional to 1,398,512.28, 1,929,400.38 and 786,524.68 is: 1,085,096.67
Step by Step Solution
- Step 1: Write the proportion equation
1,398,512.28 : 1,929,400.38 = 786,524.68 : x - Step 2: Convert to fraction form
1,398,512.28/1,929,400.38 = 786,524.68/x - Step 3: Cross multiply
1,398,512.28x = 1,929,400.38 × 786,524.68 - Step 4: Simplify right side
1,398,512.28x = 1,517,521,016,471.38 - Step 5: Solve for x
x = 1,517,521,016,471.38/1,398,512.28 - Step 6: Final answer
x = 1,085,096.67
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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.