Finding the Fourth Proportional to 4,080,963,189.20, 6,121,444,783.80 and 1,320,871,211.60
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Solution
The fourth proportional to 4,080,963,189.20, 6,121,444,783.80 and 1,320,871,211.60 is: 1,981,306,817.40
Step by Step Solution
- Step 1: Write the proportion equation
4,080,963,189.20 : 6,121,444,783.80 = 1,320,871,211.60 : x - Step 2: Convert to fraction form
4,080,963,189.20/6,121,444,783.80 = 1,320,871,211.60/x - Step 3: Cross multiply
4,080,963,189.20x = 6,121,444,783.80 × 1,320,871,211.60 - Step 4: Simplify right side
4,080,963,189.20x = 8,085,640,188,320,405,504 - Step 5: Solve for x
x = 8,085,640,188,320,405,504/4,080,963,189.20 - Step 6: Final answer
x = 1,981,306,817.40
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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.