Finding the Fourth Proportional to 764,656.74, 1,055,209.10 and 415,789.62
Calculator
Solution
The fourth proportional to 764,656.74, 1,055,209.10 and 415,789.62 is: 573,780.32
Step by Step Solution
- Step 1: Write the proportion equation
764,656.74 : 1,055,209.10 = 415,789.62 : x - Step 2: Convert to fraction form
764,656.74/1,055,209.10 = 415,789.62/x - Step 3: Cross multiply
764,656.74x = 1,055,209.10 × 415,789.62 - Step 4: Simplify right side
764,656.74x = 438,744,990,709.54 - Step 5: Solve for x
x = 438,744,990,709.54/764,656.74 - Step 6: Final answer
x = 573,780.32
Related Problems
Find fourth proportional to 382,328.37, 527,604.55 and 207,894.81
Half scale
Find fourth proportional to 1,529,313.48, 2,110,418.20 and 831,579.24
Double scale
Find fourth proportional to 764,657.74, 1,055,210.48 and 415,790.62
Similar ratio
Find fourth proportional to 1,146,985.11, 1,582,813.65 and 623,684.43
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.