Finding the Fourth Proportional to 1,990,785.12, 2,987,416.08 and 808,833.12
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Solution
The fourth proportional to 1,990,785.12, 2,987,416.08 and 808,833.12 is: 1,213,752.83
Step by Step Solution
- Step 1: Write the proportion equation
1,990,785.12 : 2,987,416.08 = 808,833.12 : x - Step 2: Convert to fraction form
1,990,785.12/2,987,416.08 = 808,833.12/x - Step 3: Cross multiply
1,990,785.12x = 2,987,416.08 × 808,833.12 - Step 4: Simplify right side
1,990,785.12x = 2,416,321,068,724.57 - Step 5: Solve for x
x = 2,416,321,068,724.57/1,990,785.12 - Step 6: Final answer
x = 1,213,752.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.