Finding the Fourth Proportional to 518,372.10, 715,266.78 and 288,879.07
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Solution
The fourth proportional to 518,372.10, 715,266.78 and 288,879.07 is: 398,604.79
Step by Step Solution
- Step 1: Write the proportion equation
518,372.10 : 715,266.78 = 288,879.07 : x - Step 2: Convert to fraction form
518,372.10/715,266.78 = 288,879.07/x - Step 3: Cross multiply
518,372.10x = 715,266.78 × 288,879.07 - Step 4: Simplify right side
518,372.10x = 206,625,602,208.30 - Step 5: Solve for x
x = 206,625,602,208.30/518,372.10 - Step 6: Final answer
x = 398,604.79
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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.