Finding the Fourth Proportional to 1,081,165.53, 1,491,760.42 and 645,497.99
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Solution
The fourth proportional to 1,081,165.53, 1,491,760.42 and 645,497.99 is: 890,639.15
Step by Step Solution
- Step 1: Write the proportion equation
1,081,165.53 : 1,491,760.42 = 645,497.99 : x - Step 2: Convert to fraction form
1,081,165.53/1,491,760.42 = 645,497.99/x - Step 3: Cross multiply
1,081,165.53x = 1,491,760.42 × 645,497.99 - Step 4: Simplify right side
1,081,165.53x = 962,928,352,671.56 - Step 5: Solve for x
x = 962,928,352,671.56/1,081,165.53 - Step 6: Final answer
x = 890,639.15
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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.