Finding the Fourth Proportional to 8,211,459,830.40, 12,317,189,745.60 and 8,048,201,155.20
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Solution
The fourth proportional to 8,211,459,830.40, 12,317,189,745.60 and 8,048,201,155.20 is: 12,072,301,732.80
Step by Step Solution
- Step 1: Write the proportion equation
8,211,459,830.40 : 12,317,189,745.60 = 8,048,201,155.20 : x - Step 2: Convert to fraction form
8,211,459,830.40/12,317,189,745.60 = 8,048,201,155.20/x - Step 3: Cross multiply
8,211,459,830.40x = 12,317,189,745.60 × 8,048,201,155.20 - Step 4: Simplify right side
8,211,459,830.40x = 99,131,220,739,355,508,736 - Step 5: Solve for x
x = 99,131,220,739,355,508,736/8,211,459,830.40 - Step 6: Final answer
x = 12,072,301,732.80
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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.