Finding the Third Proportional to 407,812 and 878,120
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Solution
The third proportional to 407,812 and 878,120 is: 1,890,809.33
Step by Step Solution
- Step 1: Write the proportion equation
407,812 : 878,120 = 878,120 : x - Step 2: Convert to fraction form
407,812/878,120 = 878,120/x - Step 3: Cross multiply
407,812x = 878,120 × 878,120 - Step 4: Simplify right side
407,812x = 771,094,734,400 - Step 5: Solve for x
x = 771,094,734,400/407,812 - Step 6: Final answer
x = 1,890,809.33
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Why These Related Problems?
These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.