Finding the Fourth Proportional to 804,915.80, 1,207,373.70 and 213,939.80
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Solution
The fourth proportional to 804,915.80, 1,207,373.70 and 213,939.80 is: 320,909.70
Step by Step Solution
- Step 1: Write the proportion equation
804,915.80 : 1,207,373.70 = 213,939.80 : x - Step 2: Convert to fraction form
804,915.80/1,207,373.70 = 213,939.80/x - Step 3: Cross multiply
804,915.80x = 1,207,373.70 × 213,939.80 - Step 4: Simplify right side
804,915.80x = 258,305,287,903.26 - Step 5: Solve for x
x = 258,305,287,903.26/804,915.80 - Step 6: Final answer
x = 320,909.70
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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.