Finding the Fourth Proportional to 449,640.72, 619,340.04 and 313,431.12
Calculator
Solution
The fourth proportional to 449,640.72, 619,340.04 and 313,431.12 is: 431,723.45
Step by Step Solution
- Step 1: Write the proportion equation
449,640.72 : 619,340.04 = 313,431.12 : x - Step 2: Convert to fraction form
449,640.72/619,340.04 = 313,431.12/x - Step 3: Cross multiply
449,640.72x = 619,340.04 × 313,431.12 - Step 4: Simplify right side
449,640.72x = 194,120,442,398.05 - Step 5: Solve for x
x = 194,120,442,398.05/449,640.72 - Step 6: Final answer
x = 431,723.45
Related Problems
Find fourth proportional to 224,820.36, 309,670.02 and 156,715.56
Half scale
Find fourth proportional to 899,281.44, 1,238,680.08 and 626,862.24
Double scale
Find fourth proportional to 449,641.72, 619,341.42 and 313,432.12
Similar ratio
Find fourth proportional to 674,461.08, 929,010.06 and 470,146.68
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.