Finding the Fourth Proportional to 3,504,469,390.80, 5,256,362,460.60 and 919,540,366.80
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Solution
The fourth proportional to 3,504,469,390.80, 5,256,362,460.60 and 919,540,366.80 is: 1,379,220,910.80
Step by Step Solution
- Step 1: Write the proportion equation
3,504,469,390.80 : 5,256,362,460.60 = 919,540,366.80 : x - Step 2: Convert to fraction form
3,504,469,390.80/5,256,362,460.60 = 919,540,366.80/x - Step 3: Cross multiply
3,504,469,390.80x = 5,256,362,460.60 × 919,540,366.80 - Step 4: Simplify right side
3,504,469,390.80x = 4,833,437,465,053,874,176 - Step 5: Solve for x
x = 4,833,437,465,053,874,176/3,504,469,390.80 - Step 6: Final answer
x = 1,379,220,910.80
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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.