Finding the Fourth Proportional to 424,195.84, 636,289.92 and 128,707.84
Calculator
Solution
The fourth proportional to 424,195.84, 636,289.92 and 128,707.84 is: 193,060.59
Step by Step Solution
- Step 1: Write the proportion equation
424,195.84 : 636,289.92 = 128,707.84 : x - Step 2: Convert to fraction form
424,195.84/636,289.92 = 128,707.84/x - Step 3: Cross multiply
424,195.84x = 636,289.92 × 128,707.84 - Step 4: Simplify right side
424,195.84x = 81,895,501,216.97 - Step 5: Solve for x
x = 81,895,501,216.97/424,195.84 - Step 6: Final answer
x = 193,060.59
Related Problems
Find fourth proportional to 212,097.92, 318,144.96 and 64,353.92
Half scale
Find fourth proportional to 848,391.68, 1,272,579.84 and 257,415.68
Double scale
Find fourth proportional to 424,196.84, 636,291.42 and 128,708.84
Similar ratio
Find fourth proportional to 636,293.76, 954,434.88 and 193,061.76
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.