Finding the Fourth Proportional to 720,785.07, 994,704.16 and 398,515.97
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Solution
The fourth proportional to 720,785.07, 994,704.16 and 398,515.97 is: 549,963.52
Step by Step Solution
- Step 1: Write the proportion equation
720,785.07 : 994,704.16 = 398,515.97 : x - Step 2: Convert to fraction form
720,785.07/994,704.16 = 398,515.97/x - Step 3: Cross multiply
720,785.07x = 994,704.16 × 398,515.97 - Step 4: Simplify right side
720,785.07x = 396,405,493,185.44 - Step 5: Solve for x
x = 396,405,493,185.44/720,785.07 - Step 6: Final answer
x = 549,963.52
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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.