Finding the Fourth Proportional to 2,128,073.87, 2,936,812.73 and 1,161,257.19
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Solution
The fourth proportional to 2,128,073.87, 2,936,812.73 and 1,161,257.19 is: 1,602,573.55
Step by Step Solution
- Step 1: Write the proportion equation
2,128,073.87 : 2,936,812.73 = 1,161,257.19 : x - Step 2: Convert to fraction form
2,128,073.87/2,936,812.73 = 1,161,257.19/x - Step 3: Cross multiply
2,128,073.87x = 2,936,812.73 × 1,161,257.19 - Step 4: Simplify right side
2,128,073.87x = 3,410,394,892,589.74 - Step 5: Solve for x
x = 3,410,394,892,589.74/2,128,073.87 - Step 6: Final answer
x = 1,602,573.55
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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.