Finding the Fourth Proportional to 4,815,321.52, 6,644,999.70 and 2,639,790.28
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Solution
The fourth proportional to 4,815,321.52, 6,644,999.70 and 2,639,790.28 is: 3,642,831.65
Step by Step Solution
- Step 1: Write the proportion equation
4,815,321.52 : 6,644,999.70 = 2,639,790.28 : x - Step 2: Convert to fraction form
4,815,321.52/6,644,999.70 = 2,639,790.28/x - Step 3: Cross multiply
4,815,321.52x = 6,644,999.70 × 2,639,790.28 - Step 4: Simplify right side
4,815,321.52x = 17,541,405,618,662.92 - Step 5: Solve for x
x = 17,541,405,618,662.92/4,815,321.52 - Step 6: Final answer
x = 3,642,831.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.