Finding the Fourth Proportional to 2,128,077.36, 2,936,817.56 and 1,161,260.70
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Solution
The fourth proportional to 2,128,077.36, 2,936,817.56 and 1,161,260.70 is: 1,602,578.40
Step by Step Solution
- Step 1: Write the proportion equation
2,128,077.36 : 2,936,817.56 = 1,161,260.70 : x - Step 2: Convert to fraction form
2,128,077.36/2,936,817.56 = 1,161,260.70/x - Step 3: Cross multiply
2,128,077.36x = 2,936,817.56 × 1,161,260.70 - Step 4: Simplify right side
2,128,077.36x = 3,410,410,815,497.89 - Step 5: Solve for x
x = 3,410,410,815,497.89/2,128,077.36 - Step 6: Final answer
x = 1,602,578.40
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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.