Finding the Fourth Proportional to 621,069.67, 857,079.74 and 349,135.18
Calculator
Solution
The fourth proportional to 621,069.67, 857,079.74 and 349,135.18 is: 481,808.57
Step by Step Solution
- Step 1: Write the proportion equation
621,069.67 : 857,079.74 = 349,135.18 : x - Step 2: Convert to fraction form
621,069.67/857,079.74 = 349,135.18/x - Step 3: Cross multiply
621,069.67x = 857,079.74 × 349,135.18 - Step 4: Simplify right side
621,069.67x = 299,236,689,299.25 - Step 5: Solve for x
x = 299,236,689,299.25/621,069.67 - Step 6: Final answer
x = 481,808.57
Related Problems
Find fourth proportional to 310,534.84, 428,539.87 and 174,567.59
Half scale
Find fourth proportional to 1,242,139.34, 1,714,159.48 and 698,270.36
Double scale
Find fourth proportional to 621,070.67, 857,081.12 and 349,136.18
Similar ratio
Find fourth proportional to 931,604.51, 1,285,619.61 and 523,702.77
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.