Finding the Fourth Proportional to 1,679,618,438.40, 2,519,427,657.60 and 759,524,793.60
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Solution
The fourth proportional to 1,679,618,438.40, 2,519,427,657.60 and 759,524,793.60 is: 1,139,287,190.40
Step by Step Solution
- Step 1: Write the proportion equation
1,679,618,438.40 : 2,519,427,657.60 = 759,524,793.60 : x - Step 2: Convert to fraction form
1,679,618,438.40/2,519,427,657.60 = 759,524,793.60/x - Step 3: Cross multiply
1,679,618,438.40x = 2,519,427,657.60 × 759,524,793.60 - Step 4: Simplify right side
1,679,618,438.40x = 1,913,567,771,628,771,584 - Step 5: Solve for x
x = 1,913,567,771,628,771,584/1,679,618,438.40 - Step 6: Final answer
x = 1,139,287,190.40
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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.