Finding the Fourth Proportional to 771,076.80, 1,064,085.84 and 431,545.05
Calculator
Solution
The fourth proportional to 771,076.80, 1,064,085.84 and 431,545.05 is: 595,532.09
Step by Step Solution
- Step 1: Write the proportion equation
771,076.80 : 1,064,085.84 = 431,545.05 : x - Step 2: Convert to fraction form
771,076.80/1,064,085.84 = 431,545.05/x - Step 3: Cross multiply
771,076.80x = 1,064,085.84 × 431,545.05 - Step 4: Simplify right side
771,076.80x = 459,200,977,027.09 - Step 5: Solve for x
x = 459,200,977,027.09/771,076.80 - Step 6: Final answer
x = 595,532.09
Related Problems
Find fourth proportional to 385,538.40, 532,042.92 and 215,772.53
Half scale
Find fourth proportional to 1,542,153.60, 2,128,171.68 and 863,090.10
Double scale
Find fourth proportional to 771,077.80, 1,064,087.22 and 431,546.05
Similar ratio
Find fourth proportional to 1,156,615.20, 1,596,128.76 and 647,317.58
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.