Finding the Fourth Proportional to 486,249.08, 728,356.37 and 390,963.29
Calculator
Solution
The fourth proportional to 486,249.08, 728,356.37 and 390,963.29 is: 585,627.02
Step by Step Solution
- Step 1: Write the proportion equation
486,249.08 : 728,356.37 = 390,963.29 : x - Step 2: Convert to fraction form
486,249.08/728,356.37 = 390,963.29/x - Step 3: Cross multiply
486,249.08x = 728,356.37 × 390,963.29 - Step 4: Simplify right side
486,249.08x = 284,760,597,111.06 - Step 5: Solve for x
x = 284,760,597,111.06/486,249.08 - Step 6: Final answer
x = 585,627.02
Related Problems
Find fourth proportional to 243,124.54, 364,178.18 and 195,481.64
Half scale
Find fourth proportional to 972,498.15, 1,456,712.73 and 781,926.57
Double scale
Find fourth proportional to 486,250.08, 728,357.86 and 390,964.29
Similar ratio
Find fourth proportional to 729,373.61, 1,092,534.55 and 586,444.93
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.