Finding the Fourth Proportional to 1,259,716,527.80, 1,889,574,791.70 and 1,055,643,183.80
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Solution
The fourth proportional to 1,259,716,527.80, 1,889,574,791.70 and 1,055,643,183.80 is: 1,583,464,775.70
Step by Step Solution
- Step 1: Write the proportion equation
1,259,716,527.80 : 1,889,574,791.70 = 1,055,643,183.80 : x - Step 2: Convert to fraction form
1,259,716,527.80/1,889,574,791.70 = 1,055,643,183.80/x - Step 3: Cross multiply
1,259,716,527.80x = 1,889,574,791.70 × 1,055,643,183.80 - Step 4: Simplify right side
1,259,716,527.80x = 1,994,716,749,138,409,728 - Step 5: Solve for x
x = 1,994,716,749,138,409,728/1,259,716,527.80 - Step 6: Final answer
x = 1,583,464,775.70
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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.