Finding the Fourth Proportional to 1,436,772.12, 2,138,194.09 and 1,388,932.44
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Solution
The fourth proportional to 1,436,772.12, 2,138,194.09 and 1,388,932.44 is: 2,066,999.42
Step by Step Solution
- Step 1: Write the proportion equation
1,436,772.12 : 2,138,194.09 = 1,388,932.44 : x - Step 2: Convert to fraction form
1,436,772.12/2,138,194.09 = 1,388,932.44/x - Step 3: Cross multiply
1,436,772.12x = 2,138,194.09 × 1,388,932.44 - Step 4: Simplify right side
1,436,772.12x = 2,969,807,134,617.28 - Step 5: Solve for x
x = 2,969,807,134,617.28/1,436,772.12 - Step 6: Final answer
x = 2,066,999.42
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.