Finding the Fourth Proportional to 7,728,634.40, 11,592,951.60 and 2,680,455.20
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Solution
The fourth proportional to 7,728,634.40, 11,592,951.60 and 2,680,455.20 is: 4,020,682.80
Step by Step Solution
- Step 1: Write the proportion equation
7,728,634.40 : 11,592,951.60 = 2,680,455.20 : x - Step 2: Convert to fraction form
7,728,634.40/11,592,951.60 = 2,680,455.20/x - Step 3: Cross multiply
7,728,634.40x = 11,592,951.60 × 2,680,455.20 - Step 4: Simplify right side
7,728,634.40x = 31,074,387,399,568.32 - Step 5: Solve for x
x = 31,074,387,399,568.32/7,728,634.40 - Step 6: Final answer
x = 4,020,682.80
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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.