Finding the Fourth Proportional to 517,358.13, 713,939.58 and 287,911.75
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Solution
The fourth proportional to 517,358.13, 713,939.58 and 287,911.75 is: 397,310.07
Step by Step Solution
- Step 1: Write the proportion equation
517,358.13 : 713,939.58 = 287,911.75 : x - Step 2: Convert to fraction form
517,358.13/713,939.58 = 287,911.75/x - Step 3: Cross multiply
517,358.13x = 713,939.58 × 287,911.75 - Step 4: Simplify right side
517,358.13x = 205,551,593,872.07 - Step 5: Solve for x
x = 205,551,593,872.07/517,358.13 - Step 6: Final answer
x = 397,310.07
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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.