Finding the Fourth Proportional to 839,809,114.80, 1,259,713,672.20 and 809,198,113.20
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Solution
The fourth proportional to 839,809,114.80, 1,259,713,672.20 and 809,198,113.20 is: 1,213,797,169.80
Step by Step Solution
- Step 1: Write the proportion equation
839,809,114.80 : 1,259,713,672.20 = 809,198,113.20 : x - Step 2: Convert to fraction form
839,809,114.80/1,259,713,672.20 = 809,198,113.20/x - Step 3: Cross multiply
839,809,114.80x = 1,259,713,672.20 × 809,198,113.20 - Step 4: Simplify right side
839,809,114.80x = 1,019,357,926,716,483,328 - Step 5: Solve for x
x = 1,019,357,926,716,483,328/839,809,114.80 - Step 6: Final answer
x = 1,213,797,169.80
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Double scale
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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.