Finding the Fourth Proportional to 8,121,679.12, 11,207,919 and 4,858,629.76
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Solution
The fourth proportional to 8,121,679.12, 11,207,919 and 4,858,629.76 is: 6,704,910.15
Step by Step Solution
- Step 1: Write the proportion equation
8,121,679.12 : 11,207,919 = 4,858,629.76 : x - Step 2: Convert to fraction form
8,121,679.12/11,207,919 = 4,858,629.76/x - Step 3: Cross multiply
8,121,679.12x = 11,207,919 × 4,858,629.76 - Step 4: Simplify right side
8,121,679.12x = 54,455,128,801,069.44 - Step 5: Solve for x
x = 54,455,128,801,069.44/8,121,679.12 - Step 6: Final answer
x = 6,704,910.15
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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.