Finding the Fourth Proportional to 2,112,515.19, 2,915,192.25 and 1,252,560.87
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Solution
The fourth proportional to 2,112,515.19, 2,915,192.25 and 1,252,560.87 is: 1,728,487.33
Step by Step Solution
- Step 1: Write the proportion equation
2,112,515.19 : 2,915,192.25 = 1,252,560.87 : x - Step 2: Convert to fraction form
2,112,515.19/2,915,192.25 = 1,252,560.87/x - Step 3: Cross multiply
2,112,515.19x = 2,915,192.25 × 1,252,560.87 - Step 4: Simplify right side
2,112,515.19x = 3,651,455,740,877.26 - Step 5: Solve for x
x = 3,651,455,740,877.26/2,112,515.19 - Step 6: Final answer
x = 1,728,487.33
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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.