Finding the Fourth Proportional to 824,402,287.20, 1,236,603,430.80 and 279,143,821.20
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Solution
The fourth proportional to 824,402,287.20, 1,236,603,430.80 and 279,143,821.20 is: 418,715,731.80
Step by Step Solution
- Step 1: Write the proportion equation
824,402,287.20 : 1,236,603,430.80 = 279,143,821.20 : x - Step 2: Convert to fraction form
824,402,287.20/1,236,603,430.80 = 279,143,821.20/x - Step 3: Cross multiply
824,402,287.20x = 1,236,603,430.80 × 279,143,821.20 - Step 4: Simplify right side
824,402,287.20x = 345,190,206,982,541,760 - Step 5: Solve for x
x = 345,190,206,982,541,760/824,402,287.20 - Step 6: Final answer
x = 418,715,731.80
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Similar ratio
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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.