Finding the Fourth Proportional to 2,076,891.40, 3,113,186.70 and 1,128,257.80
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Solution
The fourth proportional to 2,076,891.40, 3,113,186.70 and 1,128,257.80 is: 1,691,218.51
Step by Step Solution
- Step 1: Write the proportion equation
2,076,891.40 : 3,113,186.70 = 1,128,257.80 : x - Step 2: Convert to fraction form
2,076,891.40/3,113,186.70 = 1,128,257.80/x - Step 3: Cross multiply
2,076,891.40x = 3,113,186.70 × 1,128,257.80 - Step 4: Simplify right side
2,076,891.40x = 3,512,477,177,131.26 - Step 5: Solve for x
x = 3,512,477,177,131.26/2,076,891.40 - Step 6: Final answer
x = 1,691,218.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.