Finding the Fourth Proportional to 615,455.20, 922,491.60 and 260,408.80
Calculator
Solution
The fourth proportional to 615,455.20, 922,491.60 and 260,408.80 is: 390,320.74
Step by Step Solution
- Step 1: Write the proportion equation
615,455.20 : 922,491.60 = 260,408.80 : x - Step 2: Convert to fraction form
615,455.20/922,491.60 = 260,408.80/x - Step 3: Cross multiply
615,455.20x = 922,491.60 × 260,408.80 - Step 4: Simplify right side
615,455.20x = 240,224,930,566.08 - Step 5: Solve for x
x = 240,224,930,566.08/615,455.20 - Step 6: Final answer
x = 390,320.74
Related Problems
Find fourth proportional to 307,727.60, 461,245.80 and 130,204.40
Half scale
Find fourth proportional to 1,230,910.40, 1,844,983.20 and 520,817.60
Double scale
Find fourth proportional to 615,456.20, 922,493.10 and 260,409.80
Similar ratio
Find fourth proportional to 923,182.80, 1,383,737.40 and 390,613.20
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.