Finding the Fourth Proportional to 327,745,815.80, 491,618,723.70 and 85,408,719.80
Calculator
Solution
The fourth proportional to 327,745,815.80, 491,618,723.70 and 85,408,719.80 is: 128,113,079.70
Step by Step Solution
- Step 1: Write the proportion equation
327,745,815.80 : 491,618,723.70 = 85,408,719.80 : x - Step 2: Convert to fraction form
327,745,815.80/491,618,723.70 = 85,408,719.80/x - Step 3: Cross multiply
327,745,815.80x = 491,618,723.70 × 85,408,719.80 - Step 4: Simplify right side
327,745,815.80x = 41,988,525,820,926,920 - Step 5: Solve for x
x = 41,988,525,820,926,920/327,745,815.80 - Step 6: Final answer
x = 128,113,079.70
Related Problems
Find fourth proportional to 163,872,907.90, 245,809,361.85 and 42,704,359.90
Half scale
Find fourth proportional to 655,491,631.60, 983,237,447.40 and 170,817,439.60
Double scale
Find fourth proportional to 327,745,816.80, 491,618,725.20 and 85,408,720.80
Similar ratio
Find fourth proportional to 491,618,723.70, 737,428,085.55 and 128,113,079.70
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.