Finding the Fourth Proportional to 819,657,734.07, 1,131,129,161.04 and 448,379,765.45
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Solution
The fourth proportional to 819,657,734.07, 1,131,129,161.04 and 448,379,765.45 is: 618,764,890.32
Step by Step Solution
- Step 1: Write the proportion equation
819,657,734.07 : 1,131,129,161.04 = 448,379,765.45 : x - Step 2: Convert to fraction form
819,657,734.07/1,131,129,161.04 = 448,379,765.45/x - Step 3: Cross multiply
819,657,734.07x = 1,131,129,161.04 × 448,379,765.45 - Step 4: Simplify right side
819,657,734.07x = 507,175,427,920,770,432 - Step 5: Solve for x
x = 507,175,427,920,770,432/819,657,734.07 - Step 6: Final answer
x = 618,764,890.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.