Finding the Fourth Proportional to 641,923.36, 885,782.71 and 355,371.68
Calculator
Solution
The fourth proportional to 641,923.36, 885,782.71 and 355,371.68 is: 490,373.32
Step by Step Solution
- Step 1: Write the proportion equation
641,923.36 : 885,782.71 = 355,371.68 : x - Step 2: Convert to fraction form
641,923.36/885,782.71 = 355,371.68/x - Step 3: Cross multiply
641,923.36x = 885,782.71 × 355,371.68 - Step 4: Simplify right side
641,923.36x = 314,782,089,767.65 - Step 5: Solve for x
x = 314,782,089,767.65/641,923.36 - Step 6: Final answer
x = 490,373.32
Related Problems
Find fourth proportional to 320,961.68, 442,891.36 and 177,685.84
Half scale
Find fourth proportional to 1,283,846.72, 1,771,565.42 and 710,743.36
Double scale
Find fourth proportional to 641,924.36, 885,784.09 and 355,372.68
Similar ratio
Find fourth proportional to 962,885.04, 1,328,674.07 and 533,057.52
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.