Finding the Fourth Proportional to 808,893.40, 1,214,117.70 and 409,984.60
Calculator
Solution
The fourth proportional to 808,893.40, 1,214,117.70 and 409,984.60 is: 615,371.02
Step by Step Solution
- Step 1: Write the proportion equation
808,893.40 : 1,214,117.70 = 409,984.60 : x - Step 2: Convert to fraction form
808,893.40/1,214,117.70 = 409,984.60/x - Step 3: Cross multiply
808,893.40x = 1,214,117.70 × 409,984.60 - Step 4: Simplify right side
808,893.40x = 497,769,559,587.42 - Step 5: Solve for x
x = 497,769,559,587.42/808,893.40 - Step 6: Final answer
x = 615,371.02
Related Problems
Find fourth proportional to 404,446.70, 607,058.85 and 204,992.30
Half scale
Find fourth proportional to 1,617,786.80, 2,428,235.40 and 819,969.20
Double scale
Find fourth proportional to 808,894.40, 1,214,119.20 and 409,985.60
Similar ratio
Find fourth proportional to 1,213,340.10, 1,821,176.55 and 614,976.90
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.