Finding the Fourth Proportional to 423,512.80, 634,232.40 and 201,637.60
Calculator
Solution
The fourth proportional to 423,512.80, 634,232.40 and 201,637.60 is: 301,962.77
Step by Step Solution
- Step 1: Write the proportion equation
423,512.80 : 634,232.40 = 201,637.60 : x - Step 2: Convert to fraction form
423,512.80/634,232.40 = 201,637.60/x - Step 3: Cross multiply
423,512.80x = 634,232.40 × 201,637.60 - Step 4: Simplify right side
423,512.80x = 127,885,098,978.24 - Step 5: Solve for x
x = 127,885,098,978.24/423,512.80 - Step 6: Final answer
x = 301,962.77
Related Problems
Find fourth proportional to 211,756.40, 317,116.20 and 100,818.80
Half scale
Find fourth proportional to 847,025.60, 1,268,464.80 and 403,275.20
Double scale
Find fourth proportional to 423,513.80, 634,233.90 and 201,638.60
Similar ratio
Find fourth proportional to 635,269.20, 951,348.60 and 302,456.40
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.