Finding the Fourth Proportional to 7,128,836.30, 10,693,882.98 and 2,011,310.90
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Solution
The fourth proportional to 7,128,836.30, 10,693,882.98 and 2,011,310.90 is: 3,017,143.68
Step by Step Solution
- Step 1: Write the proportion equation
7,128,836.30 : 10,693,882.98 = 2,011,310.90 : x - Step 2: Convert to fraction form
7,128,836.30/10,693,882.98 = 2,011,310.90/x - Step 3: Cross multiply
7,128,836.30x = 10,693,882.98 × 2,011,310.90 - Step 4: Simplify right side
7,128,836.30x = 21,508,723,400,998.48 - Step 5: Solve for x
x = 21,508,723,400,998.48/7,128,836.30 - Step 6: Final answer
x = 3,017,143.68
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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.