Finding the Fourth Proportional to 716,811.12, 989,191.80 and 394,514.28
Calculator
Solution
The fourth proportional to 716,811.12, 989,191.80 and 394,514.28 is: 544,425.55
Step by Step Solution
- Step 1: Write the proportion equation
716,811.12 : 989,191.80 = 394,514.28 : x - Step 2: Convert to fraction form
716,811.12/989,191.80 = 394,514.28/x - Step 3: Cross multiply
716,811.12x = 989,191.80 × 394,514.28 - Step 4: Simplify right side
716,811.12x = 390,250,290,758.90 - Step 5: Solve for x
x = 390,250,290,758.90/716,811.12 - Step 6: Final answer
x = 544,425.55
Related Problems
Find fourth proportional to 358,405.56, 494,595.90 and 197,257.14
Half scale
Find fourth proportional to 1,433,622.24, 1,978,383.60 and 789,028.56
Double scale
Find fourth proportional to 716,812.12, 989,193.18 and 394,515.28
Similar ratio
Find fourth proportional to 1,075,216.68, 1,483,787.70 and 591,771.42
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.