Finding the Fourth Proportional to 1,378,700.44, 1,902,783.90 and 775,205.08
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Solution
The fourth proportional to 1,378,700.44, 1,902,783.90 and 775,205.08 is: 1,069,882.70
Step by Step Solution
- Step 1: Write the proportion equation
1,378,700.44 : 1,902,783.90 = 775,205.08 : x - Step 2: Convert to fraction form
1,378,700.44/1,902,783.90 = 775,205.08/x - Step 3: Cross multiply
1,378,700.44x = 1,902,783.90 × 775,205.08 - Step 4: Simplify right side
1,378,700.44x = 1,475,047,745,422.21 - Step 5: Solve for x
x = 1,475,047,745,422.21/1,378,700.44 - Step 6: Final answer
x = 1,069,882.70
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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.