Finding the Fourth Proportional to 2,126,207,321.80, 3,189,310,982.70 and 1,305,658,918.60
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Solution
The fourth proportional to 2,126,207,321.80, 3,189,310,982.70 and 1,305,658,918.60 is: 1,958,488,377.90
Step by Step Solution
- Step 1: Write the proportion equation
2,126,207,321.80 : 3,189,310,982.70 = 1,305,658,918.60 : x - Step 2: Convert to fraction form
2,126,207,321.80/3,189,310,982.70 = 1,305,658,918.60/x - Step 3: Cross multiply
2,126,207,321.80x = 3,189,310,982.70 × 1,305,658,918.60 - Step 4: Simplify right side
2,126,207,321.80x = 4,164,152,328,751,184,896 - Step 5: Solve for x
x = 4,164,152,328,751,184,896/2,126,207,321.80 - Step 6: Final answer
x = 1,958,488,377.90
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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.