Finding the Fourth Proportional to 664,945,023.40, 998,425,304.70 and 511,764,044.20
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Solution
The fourth proportional to 664,945,023.40, 998,425,304.70 and 511,764,044.20 is: 768,421,679.66
Step by Step Solution
- Step 1: Write the proportion equation
664,945,023.40 : 998,425,304.70 = 511,764,044.20 : x - Step 2: Convert to fraction form
664,945,023.40/998,425,304.70 = 511,764,044.20/x - Step 3: Cross multiply
664,945,023.40x = 998,425,304.70 × 511,764,044.20 - Step 4: Simplify right side
664,945,023.40x = 510,958,171,764,889,280 - Step 5: Solve for x
x = 510,958,171,764,889,280/664,945,023.40 - Step 6: Final answer
x = 768,421,679.66
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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.