Finding the Fourth Proportional to 1,419,212.70, 2,128,819.05 and 1,279,244.70
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Solution
The fourth proportional to 1,419,212.70, 2,128,819.05 and 1,279,244.70 is: 1,918,867.05
Step by Step Solution
- Step 1: Write the proportion equation
1,419,212.70 : 2,128,819.05 = 1,279,244.70 : x - Step 2: Convert to fraction form
1,419,212.70/2,128,819.05 = 1,279,244.70/x - Step 3: Cross multiply
1,419,212.70x = 2,128,819.05 × 1,279,244.70 - Step 4: Simplify right side
1,419,212.70x = 2,723,280,486,971.53 - Step 5: Solve for x
x = 2,723,280,486,971.53/1,419,212.70 - Step 6: Final answer
x = 1,918,867.05
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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.