Finding the Fourth Proportional to 7,128,206.20, 10,694,757.30 and 2,080,257.40
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Solution
The fourth proportional to 7,128,206.20, 10,694,757.30 and 2,080,257.40 is: 3,121,100.51
Step by Step Solution
- Step 1: Write the proportion equation
7,128,206.20 : 10,694,757.30 = 2,080,257.40 : x - Step 2: Convert to fraction form
7,128,206.20/10,694,757.30 = 2,080,257.40/x - Step 3: Cross multiply
7,128,206.20x = 10,694,757.30 × 2,080,257.40 - Step 4: Simplify right side
7,128,206.20x = 22,247,848,014,529.02 - Step 5: Solve for x
x = 22,247,848,014,529.02/7,128,206.20 - Step 6: Final answer
x = 3,121,100.51
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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.