Finding the Fourth Proportional to 2,232,619.21, 3,080,640.90 and 1,315,031.05
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Solution
The fourth proportional to 2,232,619.21, 3,080,640.90 and 1,315,031.05 is: 1,814,522.79
Step by Step Solution
- Step 1: Write the proportion equation
2,232,619.21 : 3,080,640.90 = 1,315,031.05 : x - Step 2: Convert to fraction form
2,232,619.21/3,080,640.90 = 1,315,031.05/x - Step 3: Cross multiply
2,232,619.21x = 3,080,640.90 × 1,315,031.05 - Step 4: Simplify right side
2,232,619.21x = 4,051,138,437,399.95 - Step 5: Solve for x
x = 4,051,138,437,399.95/2,232,619.21 - Step 6: Final answer
x = 1,814,522.79
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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.