Finding the Fourth Proportional to 1,358,135,988.20, 2,037,203,982.30 and 738,263,205.80
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Solution
The fourth proportional to 1,358,135,988.20, 2,037,203,982.30 and 738,263,205.80 is: 1,107,394,808.70
Step by Step Solution
- Step 1: Write the proportion equation
1,358,135,988.20 : 2,037,203,982.30 = 738,263,205.80 : x - Step 2: Convert to fraction form
1,358,135,988.20/2,037,203,982.30 = 738,263,205.80/x - Step 3: Cross multiply
1,358,135,988.20x = 2,037,203,982.30 × 738,263,205.80 - Step 4: Simplify right side
1,358,135,988.20x = 1,503,992,742,841,324,288 - Step 5: Solve for x
x = 1,503,992,742,841,324,288/1,358,135,988.20 - Step 6: Final answer
x = 1,107,394,808.70
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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.