Finding the Fourth Proportional to 1,121,967.74, 1,682,951.49 and 280,519.49
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Solution
The fourth proportional to 1,121,967.74, 1,682,951.49 and 280,519.49 is: 420,779.20
Step by Step Solution
- Step 1: Write the proportion equation
1,121,967.74 : 1,682,951.49 = 280,519.49 : x - Step 2: Convert to fraction form
1,121,967.74/1,682,951.49 = 280,519.49/x - Step 3: Cross multiply
1,121,967.74x = 1,682,951.49 × 280,519.49 - Step 4: Simplify right side
1,121,967.74x = 472,100,693,669.54 - Step 5: Solve for x
x = 472,100,693,669.54/1,121,967.74 - Step 6: Final answer
x = 420,779.20
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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.