Finding the Fourth Proportional to 748,608,086.40, 1,122,912,129.60 and 263,982,883.20
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Solution
The fourth proportional to 748,608,086.40, 1,122,912,129.60 and 263,982,883.20 is: 395,974,324.80
Step by Step Solution
- Step 1: Write the proportion equation
748,608,086.40 : 1,122,912,129.60 = 263,982,883.20 : x - Step 2: Convert to fraction form
748,608,086.40/1,122,912,129.60 = 263,982,883.20/x - Step 3: Cross multiply
748,608,086.40x = 1,122,912,129.60 × 263,982,883.20 - Step 4: Simplify right side
748,608,086.40x = 296,429,581,552,060,032 - Step 5: Solve for x
x = 296,429,581,552,060,032/748,608,086.40 - Step 6: Final answer
x = 395,974,324.80
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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.