Finding the Fourth Proportional to 869,120.80, 1,303,681.20 and 806,135.20
Calculator
Solution
The fourth proportional to 869,120.80, 1,303,681.20 and 806,135.20 is: 1,209,202.80
Step by Step Solution
- Step 1: Write the proportion equation
869,120.80 : 1,303,681.20 = 806,135.20 : x - Step 2: Convert to fraction form
869,120.80/1,303,681.20 = 806,135.20/x - Step 3: Cross multiply
869,120.80x = 1,303,681.20 × 806,135.20 - Step 4: Simplify right side
869,120.80x = 1,050,943,304,898.24 - Step 5: Solve for x
x = 1,050,943,304,898.24/869,120.80 - Step 6: Final answer
x = 1,209,202.80
Related Problems
Find fourth proportional to 434,560.40, 651,840.60 and 403,067.60
Half scale
Find fourth proportional to 1,738,241.60, 2,607,362.40 and 1,612,270.40
Double scale
Find fourth proportional to 869,121.80, 1,303,682.70 and 806,136.20
Similar ratio
Find fourth proportional to 1,303,681.20, 1,955,521.80 and 1,209,202.80
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.