Finding the Fourth Proportional to 518,488.74, 715,840.56 and 397,401.84
Calculator
Solution
The fourth proportional to 518,488.74, 715,840.56 and 397,401.84 is: 548,664.48
Step by Step Solution
- Step 1: Write the proportion equation
518,488.74 : 715,840.56 = 397,401.84 : x - Step 2: Convert to fraction form
518,488.74/715,840.56 = 397,401.84/x - Step 3: Cross multiply
518,488.74x = 715,840.56 × 397,401.84 - Step 4: Simplify right side
518,488.74x = 284,476,355,690.63 - Step 5: Solve for x
x = 284,476,355,690.63/518,488.74 - Step 6: Final answer
x = 548,664.48
Related Problems
Find fourth proportional to 259,244.37, 357,920.28 and 198,700.92
Half scale
Find fourth proportional to 1,036,977.48, 1,431,681.12 and 794,803.68
Double scale
Find fourth proportional to 518,489.74, 715,841.94 and 397,402.84
Similar ratio
Find fourth proportional to 777,733.11, 1,073,760.84 and 596,102.76
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.