Finding the Fourth Proportional to 450,866.30, 622,616.99 and 290,000.61
Calculator
Solution
The fourth proportional to 450,866.30, 622,616.99 and 290,000.61 is: 400,471.95
Step by Step Solution
- Step 1: Write the proportion equation
450,866.30 : 622,616.99 = 290,000.61 : x - Step 2: Convert to fraction form
450,866.30/622,616.99 = 290,000.61/x - Step 3: Cross multiply
450,866.30x = 622,616.99 × 290,000.61 - Step 4: Simplify right side
450,866.30x = 180,559,305,446.36 - Step 5: Solve for x
x = 180,559,305,446.36/450,866.30 - Step 6: Final answer
x = 400,471.95
Related Problems
Find fourth proportional to 225,433.15, 311,308.49 and 145,000.31
Half scale
Find fourth proportional to 901,732.59, 1,245,233.97 and 580,001.22
Double scale
Find fourth proportional to 450,867.30, 622,618.37 and 290,001.61
Similar ratio
Find fourth proportional to 676,299.44, 933,925.48 and 435,000.92
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.