Finding the Fourth Proportional to 1,639,915.38, 2,261,609.70 and 1,028,134.92
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Solution
The fourth proportional to 1,639,915.38, 2,261,609.70 and 1,028,134.92 is: 1,417,902.37
Step by Step Solution
- Step 1: Write the proportion equation
1,639,915.38 : 2,261,609.70 = 1,028,134.92 : x - Step 2: Convert to fraction form
1,639,915.38/2,261,609.70 = 1,028,134.92/x - Step 3: Cross multiply
1,639,915.38x = 2,261,609.70 × 1,028,134.92 - Step 4: Simplify right side
1,639,915.38x = 2,325,239,907,980.72 - Step 5: Solve for x
x = 2,325,239,907,980.72/1,639,915.38 - Step 6: Final answer
x = 1,417,902.37
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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.