Finding the Fourth Proportional to 411,218.74, 615,122.25 and 386,024.50
Calculator
Solution
The fourth proportional to 411,218.74, 615,122.25 and 386,024.50 is: 577,435.40
Step by Step Solution
- Step 1: Write the proportion equation
411,218.74 : 615,122.25 = 386,024.50 : x - Step 2: Convert to fraction form
411,218.74/615,122.25 = 386,024.50/x - Step 3: Cross multiply
411,218.74x = 615,122.25 × 386,024.50 - Step 4: Simplify right side
411,218.74x = 237,452,258,995.13 - Step 5: Solve for x
x = 237,452,258,995.13/411,218.74 - Step 6: Final answer
x = 577,435.40
Related Problems
Find fourth proportional to 205,609.37, 307,561.13 and 193,012.25
Half scale
Find fourth proportional to 822,437.48, 1,230,244.50 and 772,049
Double scale
Find fourth proportional to 411,219.74, 615,123.75 and 386,025.50
Similar ratio
Find fourth proportional to 616,828.11, 922,683.38 and 579,036.75
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.