Finding the Fourth Proportional to 657,838.19, 907,831.61 and 386,102.06
Calculator
Solution
The fourth proportional to 657,838.19, 907,831.61 and 386,102.06 is: 532,829.59
Step by Step Solution
- Step 1: Write the proportion equation
657,838.19 : 907,831.61 = 386,102.06 : x - Step 2: Convert to fraction form
657,838.19/907,831.61 = 386,102.06/x - Step 3: Cross multiply
657,838.19x = 907,831.61 × 386,102.06 - Step 4: Simplify right side
657,838.19x = 350,515,648,284.45 - Step 5: Solve for x
x = 350,515,648,284.45/657,838.19 - Step 6: Final answer
x = 532,829.59
Related Problems
Find fourth proportional to 328,919.09, 453,915.80 and 193,051.03
Half scale
Find fourth proportional to 1,315,676.37, 1,815,663.21 and 772,204.11
Double scale
Find fourth proportional to 657,839.19, 907,832.99 and 386,103.06
Similar ratio
Find fourth proportional to 986,757.28, 1,361,747.41 and 579,153.08
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.