Finding the Fourth Proportional to 1,279,692.81, 1,765,988.19 and 728,381.61
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Solution
The fourth proportional to 1,279,692.81, 1,765,988.19 and 728,381.61 is: 1,005,173.52
Step by Step Solution
- Step 1: Write the proportion equation
1,279,692.81 : 1,765,988.19 = 728,381.61 : x - Step 2: Convert to fraction form
1,279,692.81/1,765,988.19 = 728,381.61/x - Step 3: Cross multiply
1,279,692.81x = 1,765,988.19 × 728,381.61 - Step 4: Simplify right side
1,279,692.81x = 1,286,313,321,073.19 - Step 5: Solve for x
x = 1,286,313,321,073.19/1,279,692.81 - Step 6: Final answer
x = 1,005,173.52
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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.