Finding the Fourth Proportional to 2,311,780.48, 3,190,209.30 and 1,279,287.61
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Solution
The fourth proportional to 2,311,780.48, 3,190,209.30 and 1,279,287.61 is: 1,765,390.47
Step by Step Solution
- Step 1: Write the proportion equation
2,311,780.48 : 3,190,209.30 = 1,279,287.61 : x - Step 2: Convert to fraction form
2,311,780.48/3,190,209.30 = 1,279,287.61/x - Step 3: Cross multiply
2,311,780.48x = 3,190,209.30 × 1,279,287.61 - Step 4: Simplify right side
2,311,780.48x = 4,081,195,222,821.25 - Step 5: Solve for x
x = 4,081,195,222,821.25/2,311,780.48 - Step 6: Final answer
x = 1,765,390.47
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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.