Finding the Fourth Proportional to 858,496.10, 1,288,327.35 and 479,416.10
Calculator
Solution
The fourth proportional to 858,496.10, 1,288,327.35 and 479,416.10 is: 719,449.83
Step by Step Solution
- Step 1: Write the proportion equation
858,496.10 : 1,288,327.35 = 479,416.10 : x - Step 2: Convert to fraction form
858,496.10/1,288,327.35 = 479,416.10/x - Step 3: Cross multiply
858,496.10x = 1,288,327.35 × 479,416.10 - Step 4: Simplify right side
858,496.10x = 617,644,873,660.34 - Step 5: Solve for x
x = 617,644,873,660.34/858,496.10 - Step 6: Final answer
x = 719,449.83
Related Problems
Find fourth proportional to 429,248.05, 644,163.68 and 239,708.05
Half scale
Find fourth proportional to 1,716,992.20, 2,576,654.70 and 958,832.20
Double scale
Find fourth proportional to 858,497.10, 1,288,328.85 and 479,417.10
Similar ratio
Find fourth proportional to 1,287,744.15, 1,932,491.03 and 719,124.15
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.