Finding the Fourth Proportional to 420,640.64, 580,550.74 and 267,519.18
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Solution
The fourth proportional to 420,640.64, 580,550.74 and 267,519.18 is: 369,218.86
Step by Step Solution
- Step 1: Write the proportion equation
420,640.64 : 580,550.74 = 267,519.18 : x - Step 2: Convert to fraction form
420,640.64/580,550.74 = 267,519.18/x - Step 3: Cross multiply
420,640.64x = 580,550.74 × 267,519.18 - Step 4: Simplify right side
420,640.64x = 155,308,457,913.19 - Step 5: Solve for x
x = 155,308,457,913.19/420,640.64 - Step 6: Final answer
x = 369,218.86
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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.