Finding the Fourth Proportional to 1,259,714,198.40, 1,889,571,297.60 and 441,720,211.20
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Solution
The fourth proportional to 1,259,714,198.40, 1,889,571,297.60 and 441,720,211.20 is: 662,580,316.80
Step by Step Solution
- Step 1: Write the proportion equation
1,259,714,198.40 : 1,889,571,297.60 = 441,720,211.20 : x - Step 2: Convert to fraction form
1,259,714,198.40/1,889,571,297.60 = 441,720,211.20/x - Step 3: Cross multiply
1,259,714,198.40x = 1,889,571,297.60 × 441,720,211.20 - Step 4: Simplify right side
1,259,714,198.40x = 834,661,832,653,330,048 - Step 5: Solve for x
x = 834,661,832,653,330,048/1,259,714,198.40 - Step 6: Final answer
x = 662,580,316.80
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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.