Finding the Fourth Proportional to 618,965.26, 928,447.89 and 408,553.99
Calculator
Solution
The fourth proportional to 618,965.26, 928,447.89 and 408,553.99 is: 612,830.99
Step by Step Solution
- Step 1: Write the proportion equation
618,965.26 : 928,447.89 = 408,553.99 : x - Step 2: Convert to fraction form
618,965.26/928,447.89 = 408,553.99/x - Step 3: Cross multiply
618,965.26x = 928,447.89 × 408,553.99 - Step 4: Simplify right side
618,965.26x = 379,321,089,966.58 - Step 5: Solve for x
x = 379,321,089,966.58/618,965.26 - Step 6: Final answer
x = 612,830.99
Related Problems
Find fourth proportional to 309,482.63, 464,223.95 and 204,277.00
Half scale
Find fourth proportional to 1,237,930.52, 1,856,895.78 and 817,107.98
Double scale
Find fourth proportional to 618,966.26, 928,449.39 and 408,554.99
Similar ratio
Find fourth proportional to 928,447.89, 1,392,671.84 and 612,830.99
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.