Finding the Fourth Proportional to 712,821.31, 983,694.17 and 386,135.08
Calculator
Solution
The fourth proportional to 712,821.31, 983,694.17 and 386,135.08 is: 532,866.82
Step by Step Solution
- Step 1: Write the proportion equation
712,821.31 : 983,694.17 = 386,135.08 : x - Step 2: Convert to fraction form
712,821.31/983,694.17 = 386,135.08/x - Step 3: Cross multiply
712,821.31x = 983,694.17 × 386,135.08 - Step 4: Simplify right side
712,821.31x = 379,838,827,028.48 - Step 5: Solve for x
x = 379,838,827,028.48/712,821.31 - Step 6: Final answer
x = 532,866.82
Related Problems
Find fourth proportional to 356,410.66, 491,847.09 and 193,067.54
Half scale
Find fourth proportional to 1,425,642.62, 1,967,388.34 and 772,270.16
Double scale
Find fourth proportional to 712,822.31, 983,695.55 and 386,136.08
Similar ratio
Find fourth proportional to 1,069,231.97, 1,475,541.26 and 579,202.62
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.