Finding the Fourth Proportional to 489,119.40, 733,679.10 and 321,157.80
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Solution
The fourth proportional to 489,119.40, 733,679.10 and 321,157.80 is: 481,736.70
Step by Step Solution
- Step 1: Write the proportion equation
489,119.40 : 733,679.10 = 321,157.80 : x - Step 2: Convert to fraction form
489,119.40/733,679.10 = 321,157.80/x - Step 3: Cross multiply
489,119.40x = 733,679.10 × 321,157.80 - Step 4: Simplify right side
489,119.40x = 235,626,765,661.98 - Step 5: Solve for x
x = 235,626,765,661.98/489,119.40 - Step 6: Final answer
x = 481,736.70
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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.