Finding the Fourth Proportional to 507,138.19, 699,872.58 and 280,783.69
Calculator
Solution
The fourth proportional to 507,138.19, 699,872.58 and 280,783.69 is: 387,493.60
Step by Step Solution
- Step 1: Write the proportion equation
507,138.19 : 699,872.58 = 280,783.69 : x - Step 2: Convert to fraction form
507,138.19/699,872.58 = 280,783.69/x - Step 3: Cross multiply
507,138.19x = 699,872.58 × 280,783.69 - Step 4: Simplify right side
507,138.19x = 196,512,803,792.54 - Step 5: Solve for x
x = 196,512,803,792.54/507,138.19 - Step 6: Final answer
x = 387,493.60
Related Problems
Find fourth proportional to 253,569.09, 349,936.29 and 140,391.84
Half scale
Find fourth proportional to 1,014,276.38, 1,399,745.16 and 561,567.38
Double scale
Find fourth proportional to 507,139.19, 699,873.96 and 280,784.69
Similar ratio
Find fourth proportional to 760,707.28, 1,049,808.87 and 421,175.53
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.