Finding the Fourth Proportional to 7,982,820.21, 11,981,800.62 and 4,940,984.82
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Solution
The fourth proportional to 7,982,820.21, 11,981,800.62 and 4,940,984.82 is: 7,416,162.89
Step by Step Solution
- Step 1: Write the proportion equation
7,982,820.21 : 11,981,800.62 = 4,940,984.82 : x - Step 2: Convert to fraction form
7,982,820.21/11,981,800.62 = 4,940,984.82/x - Step 3: Cross multiply
7,982,820.21x = 11,981,800.62 × 4,940,984.82 - Step 4: Simplify right side
7,982,820.21x = 59,201,894,979,686.59 - Step 5: Solve for x
x = 59,201,894,979,686.59/7,982,820.21 - Step 6: Final answer
x = 7,416,162.89
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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.