Finding the Fourth Proportional to 3,115,690,291.20, 4,673,535,436.80 and 934,656,427.20
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Solution
The fourth proportional to 3,115,690,291.20, 4,673,535,436.80 and 934,656,427.20 is: 1,401,984,640.80
Step by Step Solution
- Step 1: Write the proportion equation
3,115,690,291.20 : 4,673,535,436.80 = 934,656,427.20 : x - Step 2: Convert to fraction form
3,115,690,291.20/4,673,535,436.80 = 934,656,427.20/x - Step 3: Cross multiply
3,115,690,291.20x = 4,673,535,436.80 × 934,656,427.20 - Step 4: Simplify right side
3,115,690,291.20x = 4,368,149,933,752,079,872 - Step 5: Solve for x
x = 4,368,149,933,752,079,872/3,115,690,291.20 - Step 6: Final answer
x = 1,401,984,640.80
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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.