Finding the Fourth Proportional to 1,026,431,997.80, 1,539,647,996.70 and 260,527,101.80
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Solution
The fourth proportional to 1,026,431,997.80, 1,539,647,996.70 and 260,527,101.80 is: 390,790,652.70
Step by Step Solution
- Step 1: Write the proportion equation
1,026,431,997.80 : 1,539,647,996.70 = 260,527,101.80 : x - Step 2: Convert to fraction form
1,026,431,997.80/1,539,647,996.70 = 260,527,101.80/x - Step 3: Cross multiply
1,026,431,997.80x = 1,539,647,996.70 × 260,527,101.80 - Step 4: Simplify right side
1,026,431,997.80x = 401,120,030,372,427,008 - Step 5: Solve for x
x = 401,120,030,372,427,008/1,026,431,997.80 - Step 6: Final answer
x = 390,790,652.70
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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.