Finding the Fourth Proportional to 979,842,661.20, 1,469,763,991.80 and 653,325,310.80
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Solution
The fourth proportional to 979,842,661.20, 1,469,763,991.80 and 653,325,310.80 is: 979,987,966.20
Step by Step Solution
- Step 1: Write the proportion equation
979,842,661.20 : 1,469,763,991.80 = 653,325,310.80 : x - Step 2: Convert to fraction form
979,842,661.20/1,469,763,991.80 = 653,325,310.80/x - Step 3: Cross multiply
979,842,661.20x = 1,469,763,991.80 × 653,325,310.80 - Step 4: Simplify right side
979,842,661.20x = 960,234,016,745,383,552 - Step 5: Solve for x
x = 960,234,016,745,383,552/979,842,661.20 - Step 6: Final answer
x = 979,987,966.20
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Double scale
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Similar ratio
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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.