Finding the Fourth Proportional to 2,622,130,120.80, 3,933,195,181.20 and 2,407,853,109.60
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Solution
The fourth proportional to 2,622,130,120.80, 3,933,195,181.20 and 2,407,853,109.60 is: 3,611,779,664.40
Step by Step Solution
- Step 1: Write the proportion equation
2,622,130,120.80 : 3,933,195,181.20 = 2,407,853,109.60 : x - Step 2: Convert to fraction form
2,622,130,120.80/3,933,195,181.20 = 2,407,853,109.60/x - Step 3: Cross multiply
2,622,130,120.80x = 3,933,195,181.20 × 2,407,853,109.60 - Step 4: Simplify right side
2,622,130,120.80x = 9,470,556,247,716,155,392 - Step 5: Solve for x
x = 9,470,556,247,716,155,392/2,622,130,120.80 - Step 6: Final answer
x = 3,611,779,664.40
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Double scale
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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.