Finding the Fourth Proportional to 1,278,621.05, 1,764,725.84 and 762,408.25
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Solution
The fourth proportional to 1,278,621.05, 1,764,725.84 and 762,408.25 is: 1,052,259.81
Step by Step Solution
- Step 1: Write the proportion equation
1,278,621.05 : 1,764,725.84 = 762,408.25 : x - Step 2: Convert to fraction form
1,278,621.05/1,764,725.84 = 762,408.25/x - Step 3: Cross multiply
1,278,621.05x = 1,764,725.84 × 762,408.25 - Step 4: Simplify right side
1,278,621.05x = 1,345,441,534,039.36 - Step 5: Solve for x
x = 1,345,441,534,039.36/1,278,621.05 - Step 6: Final answer
x = 1,052,259.81
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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.