Finding the Fourth Proportional to 720,872.97, 994,764.56 and 398,563.71
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Solution
The fourth proportional to 720,872.97, 994,764.56 and 398,563.71 is: 549,995.72
Step by Step Solution
- Step 1: Write the proportion equation
720,872.97 : 994,764.56 = 398,563.71 : x - Step 2: Convert to fraction form
720,872.97/994,764.56 = 398,563.71/x - Step 3: Cross multiply
720,872.97x = 994,764.56 × 398,563.71 - Step 4: Simplify right side
720,872.97x = 396,477,051,617.30 - Step 5: Solve for x
x = 396,477,051,617.30/720,872.97 - Step 6: Final answer
x = 549,995.72
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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.