Finding the Fourth Proportional to 1,380,469.26, 1,905,982.74 and 864,430.20
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Solution
The fourth proportional to 1,380,469.26, 1,905,982.74 and 864,430.20 is: 1,193,499.26
Step by Step Solution
- Step 1: Write the proportion equation
1,380,469.26 : 1,905,982.74 = 864,430.20 : x - Step 2: Convert to fraction form
1,380,469.26/1,905,982.74 = 864,430.20/x - Step 3: Cross multiply
1,380,469.26x = 1,905,982.74 × 864,430.20 - Step 4: Simplify right side
1,380,469.26x = 1,647,589,041,134.75 - Step 5: Solve for x
x = 1,647,589,041,134.75/1,380,469.26 - Step 6: Final answer
x = 1,193,499.26
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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.