Finding the Fourth Proportional to 649,731.15, 896,866.40 and 391,617.32
Calculator
Solution
The fourth proportional to 649,731.15, 896,866.40 and 391,617.32 is: 540,574.99
Step by Step Solution
- Step 1: Write the proportion equation
649,731.15 : 896,866.40 = 391,617.32 : x - Step 2: Convert to fraction form
649,731.15/896,866.40 = 391,617.32/x - Step 3: Cross multiply
649,731.15x = 896,866.40 × 391,617.32 - Step 4: Simplify right side
649,731.15x = 351,228,412,460.76 - Step 5: Solve for x
x = 351,228,412,460.76/649,731.15 - Step 6: Final answer
x = 540,574.99
Related Problems
Find fourth proportional to 324,865.58, 448,433.20 and 195,808.66
Half scale
Find fourth proportional to 1,299,462.30, 1,793,732.81 and 783,234.63
Double scale
Find fourth proportional to 649,732.15, 896,867.78 and 391,618.32
Similar ratio
Find fourth proportional to 974,596.73, 1,345,299.60 and 587,425.97
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.