Finding the Fourth Proportional to 1,907,431,251.18, 2,861,283,079.20 and 508,408,194.46
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Solution
The fourth proportional to 1,907,431,251.18, 2,861,283,079.20 and 508,408,194.46 is: 762,648,595.20
Step by Step Solution
- Step 1: Write the proportion equation
1,907,431,251.18 : 2,861,283,079.20 = 508,408,194.46 : x - Step 2: Convert to fraction form
1,907,431,251.18/2,861,283,079.20 = 508,408,194.46/x - Step 3: Cross multiply
1,907,431,251.18x = 2,861,283,079.20 × 508,408,194.46 - Step 4: Simplify right side
1,907,431,251.18x = 1,454,699,764,143,644,160 - Step 5: Solve for x
x = 1,454,699,764,143,644,160/1,907,431,251.18 - Step 6: Final answer
x = 762,648,595.20
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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.