Finding the Fourth Proportional to 518,212.26, 715,122.19 and 288,768.62
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Solution
The fourth proportional to 518,212.26, 715,122.19 and 288,768.62 is: 398,494.72
Step by Step Solution
- Step 1: Write the proportion equation
518,212.26 : 715,122.19 = 288,768.62 : x - Step 2: Convert to fraction form
518,212.26/715,122.19 = 288,768.62/x - Step 3: Cross multiply
518,212.26x = 715,122.19 × 288,768.62 - Step 4: Simplify right side
518,212.26x = 206,504,847,937.68 - Step 5: Solve for x
x = 206,504,847,937.68/518,212.26 - Step 6: Final answer
x = 398,494.72
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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.