Finding the Fourth Proportional to 479,437.39, 661,639.48 and 261,657.98
Calculator
Solution
The fourth proportional to 479,437.39, 661,639.48 and 261,657.98 is: 361,096.68
Step by Step Solution
- Step 1: Write the proportion equation
479,437.39 : 661,639.48 = 261,657.98 : x - Step 2: Convert to fraction form
479,437.39/661,639.48 = 261,657.98/x - Step 3: Cross multiply
479,437.39x = 661,639.48 × 261,657.98 - Step 4: Simplify right side
479,437.39x = 173,123,249,825.05 - Step 5: Solve for x
x = 173,123,249,825.05/479,437.39 - Step 6: Final answer
x = 361,096.68
Related Problems
Find fourth proportional to 239,718.70, 330,819.74 and 130,828.99
Half scale
Find fourth proportional to 958,874.78, 1,323,278.96 and 523,315.96
Double scale
Find fourth proportional to 479,438.39, 661,640.86 and 261,658.98
Similar ratio
Find fourth proportional to 719,156.09, 992,459.22 and 392,486.97
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.