Finding the Fourth Proportional to 1,821,128.40, 2,733,442.20 and 923,583.60
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Solution
The fourth proportional to 1,821,128.40, 2,733,442.20 and 923,583.60 is: 1,386,262.71
Step by Step Solution
- Step 1: Write the proportion equation
1,821,128.40 : 2,733,442.20 = 923,583.60 : x - Step 2: Convert to fraction form
1,821,128.40/2,733,442.20 = 923,583.60/x - Step 3: Cross multiply
1,821,128.40x = 2,733,442.20 × 923,583.60 - Step 4: Simplify right side
1,821,128.40x = 2,524,562,387,467.92 - Step 5: Solve for x
x = 2,524,562,387,467.92/1,821,128.40 - Step 6: Final answer
x = 1,386,262.71
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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.