Finding the Fourth Proportional to 2,639,715.44, 3,642,809.64 and 1,432,491.44
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Solution
The fourth proportional to 2,639,715.44, 3,642,809.64 and 1,432,491.44 is: 1,976,839.45
Step by Step Solution
- Step 1: Write the proportion equation
2,639,715.44 : 3,642,809.64 = 1,432,491.44 : x - Step 2: Convert to fraction form
2,639,715.44/3,642,809.64 = 1,432,491.44/x - Step 3: Cross multiply
2,639,715.44x = 3,642,809.64 × 1,432,491.44 - Step 4: Simplify right side
2,639,715.44x = 5,218,293,626,849.48 - Step 5: Solve for x
x = 5,218,293,626,849.48/2,639,715.44 - Step 6: Final answer
x = 1,976,839.45
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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.