Finding the Fourth Proportional to 1,421,698.92, 1,961,944.36 and 777,121.68
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Solution
The fourth proportional to 1,421,698.92, 1,961,944.36 and 777,121.68 is: 1,072,427.84
Step by Step Solution
- Step 1: Write the proportion equation
1,421,698.92 : 1,961,944.36 = 777,121.68 : x - Step 2: Convert to fraction form
1,421,698.92/1,961,944.36 = 777,121.68/x - Step 3: Cross multiply
1,421,698.92x = 1,961,944.36 × 777,121.68 - Step 4: Simplify right side
1,421,698.92x = 1,524,669,497,109.73 - Step 5: Solve for x
x = 1,524,669,497,109.73/1,421,698.92 - Step 6: Final answer
x = 1,072,427.84
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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.