Finding the Fourth Proportional to 681,161.40, 1,021,742.10 and 365,455.80
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Solution
The fourth proportional to 681,161.40, 1,021,742.10 and 365,455.80 is: 548,183.70
Step by Step Solution
- Step 1: Write the proportion equation
681,161.40 : 1,021,742.10 = 365,455.80 : x - Step 2: Convert to fraction form
681,161.40/1,021,742.10 = 365,455.80/x - Step 3: Cross multiply
681,161.40x = 1,021,742.10 × 365,455.80 - Step 4: Simplify right side
681,161.40x = 373,401,576,549.18 - Step 5: Solve for x
x = 373,401,576,549.18/681,161.40 - Step 6: Final answer
x = 548,183.70
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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.