Finding the Fourth Proportional to 1,276,793,556.18, 1,761,974,311.68 and 690,082,692.18
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Solution
The fourth proportional to 1,276,793,556.18, 1,761,974,311.68 and 690,082,692.18 is: 952,313,685.07
Step by Step Solution
- Step 1: Write the proportion equation
1,276,793,556.18 : 1,761,974,311.68 = 690,082,692.18 : x - Step 2: Convert to fraction form
1,276,793,556.18/1,761,974,311.68 = 690,082,692.18/x - Step 3: Cross multiply
1,276,793,556.18x = 1,761,974,311.68 × 690,082,692.18 - Step 4: Simplify right side
1,276,793,556.18x = 1,215,907,976,556,136,704 - Step 5: Solve for x
x = 1,215,907,976,556,136,704/1,276,793,556.18 - Step 6: Final answer
x = 952,313,685.07
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Double scale
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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.