Finding the Fourth Proportional to 5,212,115.51, 7,192,706.75 and 2,857,309.12
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Solution
The fourth proportional to 5,212,115.51, 7,192,706.75 and 2,857,309.12 is: 3,943,079.65
Step by Step Solution
- Step 1: Write the proportion equation
5,212,115.51 : 7,192,706.75 = 2,857,309.12 : x - Step 2: Convert to fraction form
5,212,115.51/7,192,706.75 = 2,857,309.12/x - Step 3: Cross multiply
5,212,115.51x = 7,192,706.75 × 2,857,309.12 - Step 4: Simplify right side
5,212,115.51x = 20,551,786,599,679.81 - Step 5: Solve for x
x = 20,551,786,599,679.81/5,212,115.51 - Step 6: Final answer
x = 3,943,079.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.