Finding the Fourth Proportional to 2,239,491,216.40, 3,359,236,824.60 and 686,770,205.20
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Solution
The fourth proportional to 2,239,491,216.40, 3,359,236,824.60 and 686,770,205.20 is: 1,030,155,307.80
Step by Step Solution
- Step 1: Write the proportion equation
2,239,491,216.40 : 3,359,236,824.60 = 686,770,205.20 : x - Step 2: Convert to fraction form
2,239,491,216.40/3,359,236,824.60 = 686,770,205.20/x - Step 3: Cross multiply
2,239,491,216.40x = 3,359,236,824.60 × 686,770,205.20 - Step 4: Simplify right side
2,239,491,216.40x = 2,307,023,763,345,938,432 - Step 5: Solve for x
x = 2,307,023,763,345,938,432/2,239,491,216.40 - Step 6: Final answer
x = 1,030,155,307.80
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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.