Finding the Fourth Proportional to 839,809,194.80, 1,259,713,792.20 and 809,198,193.20
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Solution
The fourth proportional to 839,809,194.80, 1,259,713,792.20 and 809,198,193.20 is: 1,213,797,289.80
Step by Step Solution
- Step 1: Write the proportion equation
839,809,194.80 : 1,259,713,792.20 = 809,198,193.20 : x - Step 2: Convert to fraction form
839,809,194.80/1,259,713,792.20 = 809,198,193.20/x - Step 3: Cross multiply
839,809,194.80x = 1,259,713,792.20 × 809,198,193.20 - Step 4: Simplify right side
839,809,194.80x = 1,019,358,124,597,360,384 - Step 5: Solve for x
x = 1,019,358,124,597,360,384/839,809,194.80 - Step 6: Final answer
x = 1,213,797,289.80
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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.