Finding the Fourth Proportional to 837,621.21, 1,155,916.40 and 455,647.08
Calculator
Solution
The fourth proportional to 837,621.21, 1,155,916.40 and 455,647.08 is: 628,792.49
Step by Step Solution
- Step 1: Write the proportion equation
837,621.21 : 1,155,916.40 = 455,647.08 : x - Step 2: Convert to fraction form
837,621.21/1,155,916.40 = 455,647.08/x - Step 3: Cross multiply
837,621.21x = 1,155,916.40 × 455,647.08 - Step 4: Simplify right side
837,621.21x = 526,689,930,105.88 - Step 5: Solve for x
x = 526,689,930,105.88/837,621.21 - Step 6: Final answer
x = 628,792.49
Related Problems
Find fourth proportional to 418,810.61, 577,958.20 and 227,823.54
Half scale
Find fourth proportional to 1,675,242.42, 2,311,832.79 and 911,294.16
Double scale
Find fourth proportional to 837,622.21, 1,155,917.77 and 455,648.08
Similar ratio
Find fourth proportional to 1,256,431.82, 1,733,874.59 and 683,470.62
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.