Finding the Fourth Proportional to 512,731.32, 768,789.06 and 212,849.88
Calculator
Solution
The fourth proportional to 512,731.32, 768,789.06 and 212,849.88 is: 319,146.99
Step by Step Solution
- Step 1: Write the proportion equation
512,731.32 : 768,789.06 = 212,849.88 : x - Step 2: Convert to fraction form
512,731.32/768,789.06 = 212,849.88/x - Step 3: Cross multiply
512,731.32x = 768,789.06 × 212,849.88 - Step 4: Simplify right side
512,731.32x = 163,636,659,166.31 - Step 5: Solve for x
x = 163,636,659,166.31/512,731.32 - Step 6: Final answer
x = 319,146.99
Related Problems
Find fourth proportional to 256,365.66, 384,394.53 and 106,424.94
Half scale
Find fourth proportional to 1,025,462.64, 1,537,578.12 and 425,699.76
Double scale
Find fourth proportional to 512,732.32, 768,790.56 and 212,850.88
Similar ratio
Find fourth proportional to 769,096.98, 1,153,183.59 and 319,274.82
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.