Finding the Fourth Proportional to 991,436.20, 1,368,183.36 and 561,745.42
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Solution
The fourth proportional to 991,436.20, 1,368,183.36 and 561,745.42 is: 775,209.48
Step by Step Solution
- Step 1: Write the proportion equation
991,436.20 : 1,368,183.36 = 561,745.42 : x - Step 2: Convert to fraction form
991,436.20/1,368,183.36 = 561,745.42/x - Step 3: Cross multiply
991,436.20x = 1,368,183.36 × 561,745.42 - Step 4: Simplify right side
991,436.20x = 768,570,736,200.21 - Step 5: Solve for x
x = 768,570,736,200.21/991,436.20 - Step 6: Final answer
x = 775,209.48
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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.