Finding the Fourth Proportional to 479,316.40, 661,515.21 and 275,366.94
Calculator
Solution
The fourth proportional to 479,316.40, 661,515.21 and 275,366.94 is: 380,040.03
Step by Step Solution
- Step 1: Write the proportion equation
479,316.40 : 661,515.21 = 275,366.94 : x - Step 2: Convert to fraction form
479,316.40/661,515.21 = 275,366.94/x - Step 3: Cross multiply
479,316.40x = 661,515.21 × 275,366.94 - Step 4: Simplify right side
479,316.40x = 182,159,416,660.48 - Step 5: Solve for x
x = 182,159,416,660.48/479,316.40 - Step 6: Final answer
x = 380,040.03
Related Problems
Find fourth proportional to 239,658.20, 330,757.61 and 137,683.47
Half scale
Find fourth proportional to 958,632.80, 1,323,030.42 and 550,733.87
Double scale
Find fourth proportional to 479,317.40, 661,516.59 and 275,367.94
Similar ratio
Find fourth proportional to 718,974.60, 992,272.82 and 413,050.40
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.