Finding the Fourth Proportional to 556,400.82, 767,874.36 and 311,410.08
Calculator
Solution
The fourth proportional to 556,400.82, 767,874.36 and 311,410.08 is: 429,768.99
Step by Step Solution
- Step 1: Write the proportion equation
556,400.82 : 767,874.36 = 311,410.08 : x - Step 2: Convert to fraction form
556,400.82/767,874.36 = 311,410.08/x - Step 3: Cross multiply
556,400.82x = 767,874.36 × 311,410.08 - Step 4: Simplify right side
556,400.82x = 239,123,815,877.55 - Step 5: Solve for x
x = 239,123,815,877.55/556,400.82 - Step 6: Final answer
x = 429,768.99
Related Problems
Find fourth proportional to 278,200.41, 383,937.18 and 155,705.04
Half scale
Find fourth proportional to 1,112,801.64, 1,535,748.72 and 622,820.16
Double scale
Find fourth proportional to 556,401.82, 767,875.74 and 311,411.08
Similar ratio
Find fourth proportional to 834,601.23, 1,151,811.54 and 467,115.12
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.