Finding the Fourth Proportional to 2,236,817.20, 3,086,842.90 and 1,218,221.14
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Solution
The fourth proportional to 2,236,817.20, 3,086,842.90 and 1,218,221.14 is: 1,681,164.32
Step by Step Solution
- Step 1: Write the proportion equation
2,236,817.20 : 3,086,842.90 = 1,218,221.14 : x - Step 2: Convert to fraction form
2,236,817.20/3,086,842.90 = 1,218,221.14/x - Step 3: Cross multiply
2,236,817.20x = 3,086,842.90 × 1,218,221.14 - Step 4: Simplify right side
2,236,817.20x = 3,760,457,276,638.91 - Step 5: Solve for x
x = 3,760,457,276,638.91/2,236,817.20 - Step 6: Final answer
x = 1,681,164.32
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1.5x scale
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.