Finding the Fourth Proportional to 2,131,251.21, 2,941,129.44 and 1,213,440.21
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Solution
The fourth proportional to 2,131,251.21, 2,941,129.44 and 1,213,440.21 is: 1,674,549.07
Step by Step Solution
- Step 1: Write the proportion equation
2,131,251.21 : 2,941,129.44 = 1,213,440.21 : x - Step 2: Convert to fraction form
2,131,251.21/2,941,129.44 = 1,213,440.21/x - Step 3: Cross multiply
2,131,251.21x = 2,941,129.44 × 1,213,440.21 - Step 4: Simplify right side
2,131,251.21x = 3,568,884,725,310.78 - Step 5: Solve for x
x = 3,568,884,725,310.78/2,131,251.21 - Step 6: Final answer
x = 1,674,549.07
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1.5x scale
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.