Finding the Fourth Proportional to 431,633.80, 647,450.70 and 403,985.80
Calculator
Solution
The fourth proportional to 431,633.80, 647,450.70 and 403,985.80 is: 605,978.70
Step by Step Solution
- Step 1: Write the proportion equation
431,633.80 : 647,450.70 = 403,985.80 : x - Step 2: Convert to fraction form
431,633.80/647,450.70 = 403,985.80/x - Step 3: Cross multiply
431,633.80x = 647,450.70 × 403,985.80 - Step 4: Simplify right side
431,633.80x = 261,560,889,000.06 - Step 5: Solve for x
x = 261,560,889,000.06/431,633.80 - Step 6: Final answer
x = 605,978.70
Related Problems
Find fourth proportional to 215,816.90, 323,725.35 and 201,992.90
Half scale
Find fourth proportional to 863,267.60, 1,294,901.40 and 807,971.60
Double scale
Find fourth proportional to 431,634.80, 647,452.20 and 403,986.80
Similar ratio
Find fourth proportional to 647,450.70, 971,176.05 and 605,978.70
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.