Finding the Fourth Proportional to 2,738,128.80, 4,107,193.20 and 1,221,808.80
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Solution
The fourth proportional to 2,738,128.80, 4,107,193.20 and 1,221,808.80 is: 1,832,713.20
Step by Step Solution
- Step 1: Write the proportion equation
2,738,128.80 : 4,107,193.20 = 1,221,808.80 : x - Step 2: Convert to fraction form
2,738,128.80/4,107,193.20 = 1,221,808.80/x - Step 3: Cross multiply
2,738,128.80x = 4,107,193.20 × 1,221,808.80 - Step 4: Simplify right side
2,738,128.80x = 5,018,204,795,060.16 - Step 5: Solve for x
x = 5,018,204,795,060.16/2,738,128.80 - Step 6: Final answer
x = 1,832,713.20
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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.