Finding the Fourth Proportional to 1,939,427.57, 2,678,102.46 and 1,215,519.64
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Solution
The fourth proportional to 1,939,427.57, 2,678,102.46 and 1,215,519.64 is: 1,678,477.80
Step by Step Solution
- Step 1: Write the proportion equation
1,939,427.57 : 2,678,102.46 = 1,215,519.64 : x - Step 2: Convert to fraction form
1,939,427.57/2,678,102.46 = 1,215,519.64/x - Step 3: Cross multiply
1,939,427.57x = 2,678,102.46 × 1,215,519.64 - Step 4: Simplify right side
1,939,427.57x = 3,255,286,131,367.06 - Step 5: Solve for x
x = 3,255,286,131,367.06/1,939,427.57 - Step 6: Final answer
x = 1,678,477.80
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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.