Finding the Fourth Proportional to 1,380,467.26, 1,905,979.97 and 864,428.20
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Solution
The fourth proportional to 1,380,467.26, 1,905,979.97 and 864,428.20 is: 1,193,496.49
Step by Step Solution
- Step 1: Write the proportion equation
1,380,467.26 : 1,905,979.97 = 864,428.20 : x - Step 2: Convert to fraction form
1,380,467.26/1,905,979.97 = 864,428.20/x - Step 3: Cross multiply
1,380,467.26x = 1,905,979.97 × 864,428.20 - Step 4: Simplify right side
1,380,467.26x = 1,647,582,834,703.15 - Step 5: Solve for x
x = 1,647,582,834,703.15/1,380,467.26 - Step 6: Final answer
x = 1,193,496.49
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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.