Finding the Fourth Proportional to 1,772,930,480.40, 2,659,395,720.60 and 1,192,455,190.80
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Solution
The fourth proportional to 1,772,930,480.40, 2,659,395,720.60 and 1,192,455,190.80 is: 1,788,682,786.20
Step by Step Solution
- Step 1: Write the proportion equation
1,772,930,480.40 : 2,659,395,720.60 = 1,192,455,190.80 : x - Step 2: Convert to fraction form
1,772,930,480.40/2,659,395,720.60 = 1,192,455,190.80/x - Step 3: Cross multiply
1,772,930,480.40x = 2,659,395,720.60 × 1,192,455,190.80 - Step 4: Simplify right side
1,772,930,480.40x = 3,171,210,231,420,776,448 - Step 5: Solve for x
x = 3,171,210,231,420,776,448/1,772,930,480.40 - Step 6: Final answer
x = 1,788,682,786.20
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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.