Finding the Fourth Proportional to 439,525.71, 606,473.60 and 288,809.55
Calculator
Solution
The fourth proportional to 439,525.71, 606,473.60 and 288,809.55 is: 398,509.94
Step by Step Solution
- Step 1: Write the proportion equation
439,525.71 : 606,473.60 = 288,809.55 : x - Step 2: Convert to fraction form
439,525.71/606,473.60 = 288,809.55/x - Step 3: Cross multiply
439,525.71x = 606,473.60 × 288,809.55 - Step 4: Simplify right side
439,525.71x = 175,155,366,058.83 - Step 5: Solve for x
x = 175,155,366,058.83/439,525.71 - Step 6: Final answer
x = 398,509.94
Related Problems
Find fourth proportional to 219,762.86, 303,236.80 and 144,404.78
Half scale
Find fourth proportional to 879,051.42, 1,212,947.19 and 577,619.10
Double scale
Find fourth proportional to 439,526.71, 606,474.97 and 288,810.55
Similar ratio
Find fourth proportional to 659,288.57, 909,710.39 and 433,214.33
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.