Finding the Fourth Proportional to 839,162,408.20, 1,258,743,612.30 and 512,645,057.80
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Solution
The fourth proportional to 839,162,408.20, 1,258,743,612.30 and 512,645,057.80 is: 768,967,586.70
Step by Step Solution
- Step 1: Write the proportion equation
839,162,408.20 : 1,258,743,612.30 = 512,645,057.80 : x - Step 2: Convert to fraction form
839,162,408.20/1,258,743,612.30 = 512,645,057.80/x - Step 3: Cross multiply
839,162,408.20x = 1,258,743,612.30 × 512,645,057.80 - Step 4: Simplify right side
839,162,408.20x = 645,288,691,882,914,304 - Step 5: Solve for x
x = 645,288,691,882,914,304/839,162,408.20 - Step 6: Final answer
x = 768,967,586.70
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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.