Finding the Fourth Proportional to 729,491,657.38, 1,006,697,156.36 and 394,964,138.81
Calculator
Solution
The fourth proportional to 729,491,657.38, 1,006,697,156.36 and 394,964,138.81 is: 545,049,791.02
Step by Step Solution
- Step 1: Write the proportion equation
729,491,657.38 : 1,006,697,156.36 = 394,964,138.81 : x - Step 2: Convert to fraction form
729,491,657.38/1,006,697,156.36 = 394,964,138.81/x - Step 3: Cross multiply
729,491,657.38x = 1,006,697,156.36 × 394,964,138.81 - Step 4: Simplify right side
729,491,657.38x = 397,609,275,404,203,328 - Step 5: Solve for x
x = 397,609,275,404,203,328/729,491,657.38 - Step 6: Final answer
x = 545,049,791.02
Related Problems
Find fourth proportional to 364,745,828.69, 503,348,578.18 and 197,482,069.41
Half scale
Find fourth proportional to 1,458,983,314.76, 2,013,394,312.72 and 789,928,277.62
Double scale
Find fourth proportional to 729,491,658.38, 1,006,697,157.74 and 394,964,139.81
Similar ratio
Find fourth proportional to 1,094,237,486.07, 1,510,045,734.54 and 592,446,208.22
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.