Finding the Fourth Proportional to 866,280.18, 1,299,605.70 and 259,116.14
Calculator
Solution
The fourth proportional to 866,280.18, 1,299,605.70 and 259,116.14 is: 388,729.67
Step by Step Solution
- Step 1: Write the proportion equation
866,280.18 : 1,299,605.70 = 259,116.14 : x - Step 2: Convert to fraction form
866,280.18/1,299,605.70 = 259,116.14/x - Step 3: Cross multiply
866,280.18x = 1,299,605.70 × 259,116.14 - Step 4: Simplify right side
866,280.18x = 336,748,812,506.00 - Step 5: Solve for x
x = 336,748,812,506.00/866,280.18 - Step 6: Final answer
x = 388,729.67
Related Problems
Find fourth proportional to 433,140.09, 649,802.85 and 129,558.07
Half scale
Find fourth proportional to 1,732,560.36, 2,599,211.40 and 518,232.28
Double scale
Find fourth proportional to 866,281.18, 1,299,607.20 and 259,117.14
Similar ratio
Find fourth proportional to 1,299,420.27, 1,949,408.55 and 388,674.21
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.