Finding the Fourth Proportional to 798,511,076.80, 1,197,766,615.20 and 681,609,803.20
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Solution
The fourth proportional to 798,511,076.80, 1,197,766,615.20 and 681,609,803.20 is: 1,022,414,704.80
Step by Step Solution
- Step 1: Write the proportion equation
798,511,076.80 : 1,197,766,615.20 = 681,609,803.20 : x - Step 2: Convert to fraction form
798,511,076.80/1,197,766,615.20 = 681,609,803.20/x - Step 3: Cross multiply
798,511,076.80x = 1,197,766,615.20 × 681,609,803.20 - Step 4: Simplify right side
798,511,076.80x = 816,409,466,866,002,176 - Step 5: Solve for x
x = 816,409,466,866,002,176/798,511,076.80 - Step 6: Final answer
x = 1,022,414,704.80
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Double scale
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Similar ratio
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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.