Finding the Fourth Proportional to 774,193,190.40, 1,161,289,785.60 and 768,818,419.20
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Solution
The fourth proportional to 774,193,190.40, 1,161,289,785.60 and 768,818,419.20 is: 1,153,227,628.80
Step by Step Solution
- Step 1: Write the proportion equation
774,193,190.40 : 1,161,289,785.60 = 768,818,419.20 : x - Step 2: Convert to fraction form
774,193,190.40/1,161,289,785.60 = 768,818,419.20/x - Step 3: Cross multiply
774,193,190.40x = 1,161,289,785.60 × 768,818,419.20 - Step 4: Simplify right side
774,193,190.40x = 892,820,977,198,098,944 - Step 5: Solve for x
x = 892,820,977,198,098,944/774,193,190.40 - Step 6: Final answer
x = 1,153,227,628.80
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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.