Finding the Fourth Proportional to 491,122.50, 677,646.99 and 287,133.42
Calculator
Solution
The fourth proportional to 491,122.50, 677,646.99 and 287,133.42 is: 396,184.45
Step by Step Solution
- Step 1: Write the proportion equation
491,122.50 : 677,646.99 = 287,133.42 : x - Step 2: Convert to fraction form
491,122.50/677,646.99 = 287,133.42/x - Step 3: Cross multiply
491,122.50x = 677,646.99 × 287,133.42 - Step 4: Simplify right side
491,122.50x = 194,575,097,791.41 - Step 5: Solve for x
x = 194,575,097,791.41/491,122.50 - Step 6: Final answer
x = 396,184.45
Related Problems
Find fourth proportional to 245,561.25, 338,823.50 and 143,566.71
Half scale
Find fourth proportional to 982,245, 1,355,293.98 and 574,266.84
Double scale
Find fourth proportional to 491,123.50, 677,648.37 and 287,134.42
Similar ratio
Find fourth proportional to 736,683.75, 1,016,470.49 and 430,700.13
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.