Finding the Fourth Proportional to 820,199.70, 1,230,299.55 and 465,905.70
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Solution
The fourth proportional to 820,199.70, 1,230,299.55 and 465,905.70 is: 698,858.55
Step by Step Solution
- Step 1: Write the proportion equation
820,199.70 : 1,230,299.55 = 465,905.70 : x - Step 2: Convert to fraction form
820,199.70/1,230,299.55 = 465,905.70/x - Step 3: Cross multiply
820,199.70x = 1,230,299.55 × 465,905.70 - Step 4: Simplify right side
820,199.70x = 573,203,573,052.44 - Step 5: Solve for x
x = 573,203,573,052.44/820,199.70 - Step 6: Final answer
x = 698,858.55
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1.5x scale
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.