Finding the Fourth Proportional to 8,260,972,135.20, 12,391,458,202.80 and 6,628,385,383.20
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Solution
The fourth proportional to 8,260,972,135.20, 12,391,458,202.80 and 6,628,385,383.20 is: 9,942,578,074.80
Step by Step Solution
- Step 1: Write the proportion equation
8,260,972,135.20 : 12,391,458,202.80 = 6,628,385,383.20 : x - Step 2: Convert to fraction form
8,260,972,135.20/12,391,458,202.80 = 6,628,385,383.20/x - Step 3: Cross multiply
8,260,972,135.20x = 12,391,458,202.80 × 6,628,385,383.20 - Step 4: Simplify right side
8,260,972,135.20x = 82,135,360,427,973,246,976 - Step 5: Solve for x
x = 82,135,360,427,973,246,976/8,260,972,135.20 - Step 6: Final answer
x = 9,942,578,074.80
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Double scale
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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.