Finding the Fourth Proportional to 8,128,512,139.80, 12,192,768,209.70 and 2,957,982,245.40
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Solution
The fourth proportional to 8,128,512,139.80, 12,192,768,209.70 and 2,957,982,245.40 is: 4,436,973,368.10
Step by Step Solution
- Step 1: Write the proportion equation
8,128,512,139.80 : 12,192,768,209.70 = 2,957,982,245.40 : x - Step 2: Convert to fraction form
8,128,512,139.80/12,192,768,209.70 = 2,957,982,245.40/x - Step 3: Cross multiply
8,128,512,139.80x = 12,192,768,209.70 × 2,957,982,245.40 - Step 4: Simplify right side
8,128,512,139.80x = 36,065,991,886,570,147,840 - Step 5: Solve for x
x = 36,065,991,886,570,147,840/8,128,512,139.80 - Step 6: Final answer
x = 4,436,973,368.10
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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.