Finding the Fourth Proportional to 76,947,430,197.60, 115,237,479,286.80 and 76,947,430,197.60
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Solution
The fourth proportional to 76,947,430,197.60, 115,237,479,286.80 and 76,947,430,197.60 is: 115,237,479,286.80
Step by Step Solution
- Step 1: Write the proportion equation
76,947,430,197.60 : 115,237,479,286.80 = 76,947,430,197.60 : x - Step 2: Convert to fraction form
76,947,430,197.60/115,237,479,286.80 = 76,947,430,197.60/x - Step 3: Cross multiply
76,947,430,197.60x = 115,237,479,286.80 × 76,947,430,197.60 - Step 4: Simplify right side
76,947,430,197.60x = 8,867,227,893,568,419,921,920 - Step 5: Solve for x
x = 8,867,227,893,568,419,921,920/76,947,430,197.60 - Step 6: Final answer
x = 115,237,479,286.80
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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.