Finding the Fourth Proportional to 1,821,410.20, 2,732,115.30 and 1,289,531.80
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Solution
The fourth proportional to 1,821,410.20, 2,732,115.30 and 1,289,531.80 is: 1,934,297.70
Step by Step Solution
- Step 1: Write the proportion equation
1,821,410.20 : 2,732,115.30 = 1,289,531.80 : x - Step 2: Convert to fraction form
1,821,410.20/2,732,115.30 = 1,289,531.80/x - Step 3: Cross multiply
1,821,410.20x = 2,732,115.30 × 1,289,531.80 - Step 4: Simplify right side
1,821,410.20x = 3,523,149,560,616.54 - Step 5: Solve for x
x = 3,523,149,560,616.54/1,821,410.20 - Step 6: Final answer
x = 1,934,297.70
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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.