Finding the Fourth Proportional to 394,752,203.80, 592,128,305.70 and 388,033,739.80
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Solution
The fourth proportional to 394,752,203.80, 592,128,305.70 and 388,033,739.80 is: 582,050,609.70
Step by Step Solution
- Step 1: Write the proportion equation
394,752,203.80 : 592,128,305.70 = 388,033,739.80 : x - Step 2: Convert to fraction form
394,752,203.80/592,128,305.70 = 388,033,739.80/x - Step 3: Cross multiply
394,752,203.80x = 592,128,305.70 × 388,033,739.80 - Step 4: Simplify right side
394,752,203.80x = 229,765,760,902,208,672 - Step 5: Solve for x
x = 229,765,760,902,208,672/394,752,203.80 - Step 6: Final answer
x = 582,050,609.70
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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.