Finding the Fourth Proportional to 1,189,203,295.60, 1,783,804,943.40 and 327,560,287.60
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Solution
The fourth proportional to 1,189,203,295.60, 1,783,804,943.40 and 327,560,287.60 is: 491,340,431.40
Step by Step Solution
- Step 1: Write the proportion equation
1,189,203,295.60 : 1,783,804,943.40 = 327,560,287.60 : x - Step 2: Convert to fraction form
1,189,203,295.60/1,783,804,943.40 = 327,560,287.60/x - Step 3: Cross multiply
1,189,203,295.60x = 1,783,804,943.40 × 327,560,287.60 - Step 4: Simplify right side
1,189,203,295.60x = 584,303,660,282,405,760 - Step 5: Solve for x
x = 584,303,660,282,405,760/1,189,203,295.60 - Step 6: Final answer
x = 491,340,431.40
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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.