Finding the Fourth Proportional to 555,555.75, 766,655.93 and 310,539.31
Calculator
Solution
The fourth proportional to 555,555.75, 766,655.93 and 310,539.31 is: 428,538.09
Step by Step Solution
- Step 1: Write the proportion equation
555,555.75 : 766,655.93 = 310,539.31 : x - Step 2: Convert to fraction form
555,555.75/766,655.93 = 310,539.31/x - Step 3: Cross multiply
555,555.75x = 766,655.93 × 310,539.31 - Step 4: Simplify right side
555,555.75x = 238,076,799,107.73 - Step 5: Solve for x
x = 238,076,799,107.73/555,555.75 - Step 6: Final answer
x = 428,538.09
Related Problems
Find fourth proportional to 277,777.88, 383,327.96 and 155,269.65
Half scale
Find fourth proportional to 1,111,111.50, 1,533,311.85 and 621,078.61
Double scale
Find fourth proportional to 555,556.75, 766,657.31 and 310,540.31
Similar ratio
Find fourth proportional to 833,333.63, 1,149,983.89 and 465,808.96
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.