Finding the Fourth Proportional to 804,921,786.96, 1,207,383,101.55 and 252,267,258.20
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Solution
The fourth proportional to 804,921,786.96, 1,207,383,101.55 and 252,267,258.20 is: 378,401,019.27
Step by Step Solution
- Step 1: Write the proportion equation
804,921,786.96 : 1,207,383,101.55 = 252,267,258.20 : x - Step 2: Convert to fraction form
804,921,786.96/1,207,383,101.55 = 252,267,258.20/x - Step 3: Cross multiply
804,921,786.96x = 1,207,383,101.55 × 252,267,258.20 - Step 4: Simplify right side
804,921,786.96x = 304,583,224,618,993,728 - Step 5: Solve for x
x = 304,583,224,618,993,728/804,921,786.96 - Step 6: Final answer
x = 378,401,019.27
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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.