Finding the Fourth Proportional to 3,878,736,478.47, 5,818,104,794.94 and 931,016,096.97
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Solution
The fourth proportional to 3,878,736,478.47, 5,818,104,794.94 and 931,016,096.97 is: 1,396,524,163.99
Step by Step Solution
- Step 1: Write the proportion equation
3,878,736,478.47 : 5,818,104,794.94 = 931,016,096.97 : x - Step 2: Convert to fraction form
3,878,736,478.47/5,818,104,794.94 = 931,016,096.97/x - Step 3: Cross multiply
3,878,736,478.47x = 5,818,104,794.94 × 931,016,096.97 - Step 4: Simplify right side
3,878,736,478.47x = 5,416,749,217,947,481,088 - Step 5: Solve for x
x = 5,416,749,217,947,481,088/3,878,736,478.47 - Step 6: Final answer
x = 1,396,524,163.99
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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.