Finding the Fourth Proportional to 518,211.26, 715,120.81 and 288,767.62
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Solution
The fourth proportional to 518,211.26, 715,120.81 and 288,767.62 is: 398,493.34
Step by Step Solution
- Step 1: Write the proportion equation
518,211.26 : 715,120.81 = 288,767.62 : x - Step 2: Convert to fraction form
518,211.26/715,120.81 = 288,767.62/x - Step 3: Cross multiply
518,211.26x = 715,120.81 × 288,767.62 - Step 4: Simplify right side
518,211.26x = 206,503,734,316.17 - Step 5: Solve for x
x = 206,503,734,316.17/518,211.26 - Step 6: Final answer
x = 398,493.34
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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.