Finding the Fourth Proportional to 1,391,441.44, 1,920,236.88 and 810,626.08
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Solution
The fourth proportional to 1,391,441.44, 1,920,236.88 and 810,626.08 is: 1,118,691.78
Step by Step Solution
- Step 1: Write the proportion equation
1,391,441.44 : 1,920,236.88 = 810,626.08 : x - Step 2: Convert to fraction form
1,391,441.44/1,920,236.88 = 810,626.08/x - Step 3: Cross multiply
1,391,441.44x = 1,920,236.88 × 810,626.08 - Step 4: Simplify right side
1,391,441.44x = 1,556,594,094,705.83 - Step 5: Solve for x
x = 1,556,594,094,705.83/1,391,441.44 - Step 6: Final answer
x = 1,118,691.78
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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.