Finding the Fourth Proportional to 1,986,717.20, 2,741,588.70 and 1,127,258.96
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Solution
The fourth proportional to 1,986,717.20, 2,741,588.70 and 1,127,258.96 is: 1,555,571.39
Step by Step Solution
- Step 1: Write the proportion equation
1,986,717.20 : 2,741,588.70 = 1,127,258.96 : x - Step 2: Convert to fraction form
1,986,717.20/2,741,588.70 = 1,127,258.96/x - Step 3: Cross multiply
1,986,717.20x = 2,741,588.70 × 1,127,258.96 - Step 4: Simplify right side
1,986,717.20x = 3,090,480,426,709.75 - Step 5: Solve for x
x = 3,090,480,426,709.75/1,986,717.20 - Step 6: Final answer
x = 1,555,571.39
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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.