Finding the Fourth Proportional to 756,435.20, 1,134,652.80 and 621,132.80
Calculator
Solution
The fourth proportional to 756,435.20, 1,134,652.80 and 621,132.80 is: 931,699.20
Step by Step Solution
- Step 1: Write the proportion equation
756,435.20 : 1,134,652.80 = 621,132.80 : x - Step 2: Convert to fraction form
756,435.20/1,134,652.80 = 621,132.80/x - Step 3: Cross multiply
756,435.20x = 1,134,652.80 × 621,132.80 - Step 4: Simplify right side
756,435.20x = 704,770,070,691.84 - Step 5: Solve for x
x = 704,770,070,691.84/756,435.20 - Step 6: Final answer
x = 931,699.20
Related Problems
Find fourth proportional to 378,217.60, 567,326.40 and 310,566.40
Half scale
Find fourth proportional to 1,512,870.40, 2,269,305.60 and 1,242,265.60
Double scale
Find fourth proportional to 756,436.20, 1,134,654.30 and 621,133.80
Similar ratio
Find fourth proportional to 1,134,652.80, 1,701,979.20 and 931,699.20
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.