Finding the Fourth Proportional to 1,279,119.12, 1,918,344.60 and 380,318.88
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Solution
The fourth proportional to 1,279,119.12, 1,918,344.60 and 380,318.88 is: 570,378.99
Step by Step Solution
- Step 1: Write the proportion equation
1,279,119.12 : 1,918,344.60 = 380,318.88 : x - Step 2: Convert to fraction form
1,279,119.12/1,918,344.60 = 380,318.88/x - Step 3: Cross multiply
1,279,119.12x = 1,918,344.60 × 380,318.88 - Step 4: Simplify right side
1,279,119.12x = 729,582,669,726.05 - Step 5: Solve for x
x = 729,582,669,726.05/1,279,119.12 - Step 6: Final answer
x = 570,378.99
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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.