Finding the Fourth Proportional to 379,479.36, 523,676.70 and 209,709.84
Calculator
Solution
The fourth proportional to 379,479.36, 523,676.70 and 209,709.84 is: 289,396.92
Step by Step Solution
- Step 1: Write the proportion equation
379,479.36 : 523,676.70 = 209,709.84 : x - Step 2: Convert to fraction form
379,479.36/523,676.70 = 209,709.84/x - Step 3: Cross multiply
379,479.36x = 523,676.70 × 209,709.84 - Step 4: Simplify right side
379,479.36x = 109,820,156,968.73 - Step 5: Solve for x
x = 109,820,156,968.73/379,479.36 - Step 6: Final answer
x = 289,396.92
Related Problems
Find fourth proportional to 189,739.68, 261,838.35 and 104,854.92
Half scale
Find fourth proportional to 758,958.72, 1,047,353.40 and 419,419.68
Double scale
Find fourth proportional to 379,480.36, 523,678.08 and 209,710.84
Similar ratio
Find fourth proportional to 569,219.04, 785,515.05 and 314,564.76
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.