Finding the Fourth Proportional to 557,017,695.12, 768,702,849 and 306,130,979.88
Calculator
Solution
The fourth proportional to 557,017,695.12, 768,702,849 and 306,130,979.88 is: 422,470,881.02
Step by Step Solution
- Step 1: Write the proportion equation
557,017,695.12 : 768,702,849 = 306,130,979.88 : x - Step 2: Convert to fraction form
557,017,695.12/768,702,849 = 306,130,979.88/x - Step 3: Cross multiply
557,017,695.12x = 768,702,849 × 306,130,979.88 - Step 4: Simplify right side
557,017,695.12x = 235,323,756,400,917,664 - Step 5: Solve for x
x = 235,323,756,400,917,664/557,017,695.12 - Step 6: Final answer
x = 422,470,881.02
Related Problems
Find fourth proportional to 278,508,847.56, 384,351,424.50 and 153,065,489.94
Half scale
Find fourth proportional to 1,114,035,390.24, 1,537,405,698 and 612,261,959.76
Double scale
Find fourth proportional to 557,017,696.12, 768,702,850.38 and 306,130,980.88
Similar ratio
Find fourth proportional to 835,526,542.68, 1,153,054,273.50 and 459,196,469.82
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.