Finding the Fourth Proportional to 3,416,785.38, 4,715,262.21 and 1,888,990.92
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Solution
The fourth proportional to 3,416,785.38, 4,715,262.21 and 1,888,990.92 is: 2,606,861.86
Step by Step Solution
- Step 1: Write the proportion equation
3,416,785.38 : 4,715,262.21 = 1,888,990.92 : x - Step 2: Convert to fraction form
3,416,785.38/4,715,262.21 = 1,888,990.92/x - Step 3: Cross multiply
3,416,785.38x = 4,715,262.21 × 1,888,990.92 - Step 4: Simplify right side
3,416,785.38x = 8,907,087,500,109.13 - Step 5: Solve for x
x = 8,907,087,500,109.13/3,416,785.38 - Step 6: Final answer
x = 2,606,861.86
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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.