Finding the Fourth Proportional to 871,279,974.40, 1,306,919,961.60 and 866,178,140.80
Calculator
Solution
The fourth proportional to 871,279,974.40, 1,306,919,961.60 and 866,178,140.80 is: 1,299,267,211.20
Step by Step Solution
- Step 1: Write the proportion equation
871,279,974.40 : 1,306,919,961.60 = 866,178,140.80 : x - Step 2: Convert to fraction form
871,279,974.40/1,306,919,961.60 = 866,178,140.80/x - Step 3: Cross multiply
871,279,974.40x = 1,306,919,961.60 × 866,178,140.80 - Step 4: Simplify right side
871,279,974.40x = 1,132,025,502,513,095,296 - Step 5: Solve for x
x = 1,132,025,502,513,095,296/871,279,974.40 - Step 6: Final answer
x = 1,299,267,211.20
Related Problems
Find fourth proportional to 435,639,987.20, 653,459,980.80 and 433,089,070.40
Half scale
Find fourth proportional to 1,742,559,948.80, 2,613,839,923.20 and 1,732,356,281.60
Double scale
Find fourth proportional to 871,279,975.40, 1,306,919,963.10 and 866,178,141.80
Similar ratio
Find fourth proportional to 1,306,919,961.60, 1,960,379,942.40 and 1,299,267,211.20
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.