Finding the Fourth Proportional to 7,887,023.20, 11,829,368.40 and 2,207,821.60
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Solution
The fourth proportional to 7,887,023.20, 11,829,368.40 and 2,207,821.60 is: 3,311,405.89
Step by Step Solution
- Step 1: Write the proportion equation
7,887,023.20 : 11,829,368.40 = 2,207,821.60 : x - Step 2: Convert to fraction form
7,887,023.20/11,829,368.40 = 2,207,821.60/x - Step 3: Cross multiply
7,887,023.20x = 11,829,368.40 × 2,207,821.60 - Step 4: Simplify right side
7,887,023.20x = 26,117,135,067,877.44 - Step 5: Solve for x
x = 26,117,135,067,877.44/7,887,023.20 - Step 6: Final answer
x = 3,311,405.89
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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.