Finding the Fourth Proportional to 1,372,694.80, 2,058,082.20 and 811,440.40
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Solution
The fourth proportional to 1,372,694.80, 2,058,082.20 and 811,440.40 is: 1,216,593.12
Step by Step Solution
- Step 1: Write the proportion equation
1,372,694.80 : 2,058,082.20 = 811,440.40 : x - Step 2: Convert to fraction form
1,372,694.80/2,058,082.20 = 811,440.40/x - Step 3: Cross multiply
1,372,694.80x = 2,058,082.20 × 811,440.40 - Step 4: Simplify right side
1,372,694.80x = 1,670,011,043,600.88 - Step 5: Solve for x
x = 1,670,011,043,600.88/1,372,694.80 - Step 6: Final answer
x = 1,216,593.12
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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.