Finding the Fourth Proportional to 838,858,466.20, 1,258,287,699.30 and 512,341,115.80
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Solution
The fourth proportional to 838,858,466.20, 1,258,287,699.30 and 512,341,115.80 is: 768,511,673.70
Step by Step Solution
- Step 1: Write the proportion equation
838,858,466.20 : 1,258,287,699.30 = 512,341,115.80 : x - Step 2: Convert to fraction form
838,858,466.20/1,258,287,699.30 = 512,341,115.80/x - Step 3: Cross multiply
838,858,466.20x = 1,258,287,699.30 × 512,341,115.80 - Step 4: Simplify right side
838,858,466.20x = 644,672,523,856,776,832 - Step 5: Solve for x
x = 644,672,523,856,776,832/838,858,466.20 - Step 6: Final answer
x = 768,511,673.70
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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.