Finding the Fourth Proportional to 808,885.80, 1,213,328.70 and 217,909.80
Calculator
Solution
The fourth proportional to 808,885.80, 1,213,328.70 and 217,909.80 is: 326,864.70
Step by Step Solution
- Step 1: Write the proportion equation
808,885.80 : 1,213,328.70 = 217,909.80 : x - Step 2: Convert to fraction form
808,885.80/1,213,328.70 = 217,909.80/x - Step 3: Cross multiply
808,885.80x = 1,213,328.70 × 217,909.80 - Step 4: Simplify right side
808,885.80x = 264,396,214,351.26 - Step 5: Solve for x
x = 264,396,214,351.26/808,885.80 - Step 6: Final answer
x = 326,864.70
Related Problems
Find fourth proportional to 404,442.90, 606,664.35 and 108,954.90
Half scale
Find fourth proportional to 1,617,771.60, 2,426,657.40 and 435,819.60
Double scale
Find fourth proportional to 808,886.80, 1,213,330.20 and 217,910.80
Similar ratio
Find fourth proportional to 1,213,328.70, 1,819,993.05 and 326,864.70
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.