Finding the Fourth Proportional to 990,115.12, 1,366,361.50 and 537,406.12
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Solution
The fourth proportional to 990,115.12, 1,366,361.50 and 537,406.12 is: 741,621.88
Step by Step Solution
- Step 1: Write the proportion equation
990,115.12 : 1,366,361.50 = 537,406.12 : x - Step 2: Convert to fraction form
990,115.12/1,366,361.50 = 537,406.12/x - Step 3: Cross multiply
990,115.12x = 1,366,361.50 × 537,406.12 - Step 4: Simplify right side
990,115.12x = 734,291,032,232.38 - Step 5: Solve for x
x = 734,291,032,232.38/990,115.12 - Step 6: Final answer
x = 741,621.88
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1.5x scale
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.