Finding the Fourth Proportional to 420,640.59, 580,481.01 and 229,653.99
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Solution
The fourth proportional to 420,640.59, 580,481.01 and 229,653.99 is: 316,920.87
Step by Step Solution
- Step 1: Write the proportion equation
420,640.59 : 580,481.01 = 229,653.99 : x - Step 2: Convert to fraction form
420,640.59/580,481.01 = 229,653.99/x - Step 3: Cross multiply
420,640.59x = 580,481.01 × 229,653.99 - Step 4: Simplify right side
420,640.59x = 133,309,780,065.73 - Step 5: Solve for x
x = 133,309,780,065.73/420,640.59 - Step 6: Final answer
x = 316,920.87
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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.