Finding the Fourth Proportional to 738,213,040.20, 1,107,744,713.10 and 278,481,145.80
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Solution
The fourth proportional to 738,213,040.20, 1,107,744,713.10 and 278,481,145.80 is: 417,882,101.99
Step by Step Solution
- Step 1: Write the proportion equation
738,213,040.20 : 1,107,744,713.10 = 278,481,145.80 : x - Step 2: Convert to fraction form
738,213,040.20/1,107,744,713.10 = 278,481,145.80/x - Step 3: Cross multiply
738,213,040.20x = 1,107,744,713.10 × 278,481,145.80 - Step 4: Simplify right side
738,213,040.20x = 308,486,016,957,980,288 - Step 5: Solve for x
x = 308,486,016,957,980,288/738,213,040.20 - Step 6: Final answer
x = 417,882,101.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.