Finding the Fourth Proportional to 1,311,018,777.21, 1,809,207,858.11 and 746,504,118.84
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Solution
The fourth proportional to 1,311,018,777.21, 1,809,207,858.11 and 746,504,118.84 is: 1,030,176,791.81
Step by Step Solution
- Step 1: Write the proportion equation
1,311,018,777.21 : 1,809,207,858.11 = 746,504,118.84 : x - Step 2: Convert to fraction form
1,311,018,777.21/1,809,207,858.11 = 746,504,118.84/x - Step 3: Cross multiply
1,311,018,777.21x = 1,809,207,858.11 × 746,504,118.84 - Step 4: Simplify right side
1,311,018,777.21x = 1,350,581,117,913,076,736 - Step 5: Solve for x
x = 1,350,581,117,913,076,736/1,311,018,777.21 - Step 6: Final answer
x = 1,030,176,791.81
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.