Finding the Fourth Proportional to 815,491.92, 1,125,392.76 and 447,984.54
Calculator
Solution
The fourth proportional to 815,491.92, 1,125,392.76 and 447,984.54 is: 618,226.31
Step by Step Solution
- Step 1: Write the proportion equation
815,491.92 : 1,125,392.76 = 447,984.54 : x - Step 2: Convert to fraction form
815,491.92/1,125,392.76 = 447,984.54/x - Step 3: Cross multiply
815,491.92x = 1,125,392.76 × 447,984.54 - Step 4: Simplify right side
815,491.92x = 504,158,557,907.93 - Step 5: Solve for x
x = 504,158,557,907.93/815,491.92 - Step 6: Final answer
x = 618,226.31
Related Problems
Find fourth proportional to 407,745.96, 562,696.38 and 223,992.27
Half scale
Find fourth proportional to 1,630,983.84, 2,250,785.52 and 895,969.08
Double scale
Find fourth proportional to 815,492.92, 1,125,394.14 and 447,985.54
Similar ratio
Find fourth proportional to 1,223,237.88, 1,688,089.14 and 671,976.81
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.