Finding the Fourth Proportional to 509,906.13, 703,685.94 and 280,451.55
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Solution
The fourth proportional to 509,906.13, 703,685.94 and 280,451.55 is: 387,031.65
Step by Step Solution
- Step 1: Write the proportion equation
509,906.13 : 703,685.94 = 280,451.55 : x - Step 2: Convert to fraction form
509,906.13/703,685.94 = 280,451.55/x - Step 3: Cross multiply
509,906.13x = 703,685.94 × 280,451.55 - Step 4: Simplify right side
509,906.13x = 197,349,812,586.21 - Step 5: Solve for x
x = 197,349,812,586.21/509,906.13 - Step 6: Final answer
x = 387,031.65
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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.