Finding the Fourth Proportional to 747,286.70, 1,121,527.82 and 392,509.94
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Solution
The fourth proportional to 747,286.70, 1,121,527.82 and 392,509.94 is: 589,078.88
Step by Step Solution
- Step 1: Write the proportion equation
747,286.70 : 1,121,527.82 = 392,509.94 : x - Step 2: Convert to fraction form
747,286.70/1,121,527.82 = 392,509.94/x - Step 3: Cross multiply
747,286.70x = 1,121,527.82 × 392,509.94 - Step 4: Simplify right side
747,286.70x = 440,210,812,710.17 - Step 5: Solve for x
x = 440,210,812,710.17/747,286.70 - Step 6: Final answer
x = 589,078.88
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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.