Finding the Fourth Proportional to 979,877.21, 1,467,249.71 and 641,854.49
Calculator
Solution
The fourth proportional to 979,877.21, 1,467,249.71 and 641,854.49 is: 961,100.84
Step by Step Solution
- Step 1: Write the proportion equation
979,877.21 : 1,467,249.71 = 641,854.49 : x - Step 2: Convert to fraction form
979,877.21/1,467,249.71 = 641,854.49/x - Step 3: Cross multiply
979,877.21x = 1,467,249.71 × 641,854.49 - Step 4: Simplify right side
979,877.21x = 941,760,803,769.18 - Step 5: Solve for x
x = 941,760,803,769.18/979,877.21 - Step 6: Final answer
x = 961,100.84
Related Problems
Find fourth proportional to 489,938.60, 733,624.85 and 320,927.24
Half scale
Find fourth proportional to 1,959,754.41, 2,934,499.41 and 1,283,708.97
Double scale
Find fourth proportional to 979,878.21, 1,467,251.20 and 641,855.49
Similar ratio
Find fourth proportional to 1,469,815.81, 2,200,874.56 and 962,781.73
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.