Finding the Fourth Proportional to 2,191,771,452.79, 3,288,205,350.78 and 639,062,774.20
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Solution
The fourth proportional to 2,191,771,452.79, 3,288,205,350.78 and 639,062,774.20 is: 958,753,993.69
Step by Step Solution
- Step 1: Write the proportion equation
2,191,771,452.79 : 3,288,205,350.78 = 639,062,774.20 : x - Step 2: Convert to fraction form
2,191,771,452.79/3,288,205,350.78 = 639,062,774.20/x - Step 3: Cross multiply
2,191,771,452.79x = 3,288,205,350.78 × 639,062,774.20 - Step 4: Simplify right side
2,191,771,452.79x = 2,101,369,633,608,751,104 - Step 5: Solve for x
x = 2,101,369,633,608,751,104/2,191,771,452.79 - Step 6: Final answer
x = 958,753,993.69
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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.