Finding the Fourth Proportional to 500,212.97, 690,391.05 and 379,143.08
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Solution
The fourth proportional to 500,212.97, 690,391.05 and 379,143.08 is: 523,291.09
Step by Step Solution
- Step 1: Write the proportion equation
500,212.97 : 690,391.05 = 379,143.08 : x - Step 2: Convert to fraction form
500,212.97/690,391.05 = 379,143.08/x - Step 3: Cross multiply
500,212.97x = 690,391.05 × 379,143.08 - Step 4: Simplify right side
500,212.97x = 261,756,989,101.43 - Step 5: Solve for x
x = 261,756,989,101.43/500,212.97 - Step 6: Final answer
x = 523,291.09
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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.