Finding the Fourth Proportional to 1,408,775.75, 2,113,163.67 and 660,821.75
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Solution
The fourth proportional to 1,408,775.75, 2,113,163.67 and 660,821.75 is: 991,232.65
Step by Step Solution
- Step 1: Write the proportion equation
1,408,775.75 : 2,113,163.67 = 660,821.75 : x - Step 2: Convert to fraction form
1,408,775.75/2,113,163.67 = 660,821.75/x - Step 3: Cross multiply
1,408,775.75x = 2,113,163.67 × 660,821.75 - Step 4: Simplify right side
1,408,775.75x = 1,396,424,514,445.82 - Step 5: Solve for x
x = 1,396,424,514,445.82/1,408,775.75 - Step 6: Final answer
x = 991,232.65
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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.