Finding the Fourth Proportional to 521,831.28, 720,138.84 and 292,405.68
Calculator
Solution
The fourth proportional to 521,831.28, 720,138.84 and 292,405.68 is: 403,526.38
Step by Step Solution
- Step 1: Write the proportion equation
521,831.28 : 720,138.84 = 292,405.68 : x - Step 2: Convert to fraction form
521,831.28/720,138.84 = 292,405.68/x - Step 3: Cross multiply
521,831.28x = 720,138.84 × 292,405.68 - Step 4: Simplify right side
521,831.28x = 210,572,687,204.61 - Step 5: Solve for x
x = 210,572,687,204.61/521,831.28 - Step 6: Final answer
x = 403,526.38
Related Problems
Find fourth proportional to 260,915.64, 360,069.42 and 146,202.84
Half scale
Find fourth proportional to 1,043,662.56, 1,440,277.68 and 584,811.36
Double scale
Find fourth proportional to 521,832.28, 720,140.22 and 292,406.68
Similar ratio
Find fourth proportional to 782,746.92, 1,080,208.26 and 438,608.52
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.