Finding the Fourth Proportional to 990,392.12, 1,373,733.47 and 964,141.84
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Solution
The fourth proportional to 990,392.12, 1,373,733.47 and 964,141.84 is: 1,337,322.75
Step by Step Solution
- Step 1: Write the proportion equation
990,392.12 : 1,373,733.47 = 964,141.84 : x - Step 2: Convert to fraction form
990,392.12/1,373,733.47 = 964,141.84/x - Step 3: Cross multiply
990,392.12x = 1,373,733.47 × 964,141.84 - Step 4: Simplify right side
990,392.12x = 1,324,473,915,435.38 - Step 5: Solve for x
x = 1,324,473,915,435.38/990,392.12 - Step 6: Final answer
x = 1,337,322.75
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.