Finding the Fourth Proportional to 1,222,277.76, 1,686,761.28 and 678,448.56
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Solution
The fourth proportional to 1,222,277.76, 1,686,761.28 and 678,448.56 is: 936,268.99
Step by Step Solution
- Step 1: Write the proportion equation
1,222,277.76 : 1,686,761.28 = 678,448.56 : x - Step 2: Convert to fraction form
1,222,277.76/1,686,761.28 = 678,448.56/x - Step 3: Cross multiply
1,222,277.76x = 1,686,761.28 × 678,448.56 - Step 4: Simplify right side
1,222,277.76x = 1,144,380,761,479.76 - Step 5: Solve for x
x = 1,144,380,761,479.76/1,222,277.76 - Step 6: Final answer
x = 936,268.99
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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.