Finding the Fourth Proportional to 500,211.97, 690,389.67 and 379,142.08
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Solution
The fourth proportional to 500,211.97, 690,389.67 and 379,142.08 is: 523,289.71
Step by Step Solution
- Step 1: Write the proportion equation
500,211.97 : 690,389.67 = 379,142.08 : x - Step 2: Convert to fraction form
500,211.97/690,389.67 = 379,142.08/x - Step 3: Cross multiply
500,211.97x = 690,389.67 × 379,142.08 - Step 4: Simplify right side
500,211.97x = 261,755,775,494.31 - Step 5: Solve for x
x = 261,755,775,494.31/500,211.97 - Step 6: Final answer
x = 523,289.71
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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.