Finding the Fourth Proportional to 486,431.80, 729,647.70 and 131,435.80
Calculator
Solution
The fourth proportional to 486,431.80, 729,647.70 and 131,435.80 is: 197,153.70
Step by Step Solution
- Step 1: Write the proportion equation
486,431.80 : 729,647.70 = 131,435.80 : x - Step 2: Convert to fraction form
486,431.80/729,647.70 = 131,435.80/x - Step 3: Cross multiply
486,431.80x = 729,647.70 × 131,435.80 - Step 4: Simplify right side
486,431.80x = 95,901,829,167.66 - Step 5: Solve for x
x = 95,901,829,167.66/486,431.80 - Step 6: Final answer
x = 197,153.70
Related Problems
Find fourth proportional to 243,215.90, 364,823.85 and 65,717.90
Half scale
Find fourth proportional to 972,863.60, 1,459,295.40 and 262,871.60
Double scale
Find fourth proportional to 486,432.80, 729,649.20 and 131,436.80
Similar ratio
Find fourth proportional to 729,647.70, 1,094,471.55 and 197,153.70
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.