Finding the Fourth Proportional to 3,972,454,358.40, 5,482,157,079.60 and 2,212,321,766.40
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Solution
The fourth proportional to 3,972,454,358.40, 5,482,157,079.60 and 2,212,321,766.40 is: 3,053,098,749.49
Step by Step Solution
- Step 1: Write the proportion equation
3,972,454,358.40 : 5,482,157,079.60 = 2,212,321,766.40 : x - Step 2: Convert to fraction form
3,972,454,358.40/5,482,157,079.60 = 2,212,321,766.40/x - Step 3: Cross multiply
3,972,454,358.40x = 5,482,157,079.60 × 2,212,321,766.40 - Step 4: Simplify right side
3,972,454,358.40x = 12,128,295,434,022,938,624 - Step 5: Solve for x
x = 12,128,295,434,022,938,624/3,972,454,358.40 - Step 6: Final answer
x = 3,053,098,749.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.