Finding the Fourth Proportional to 747,401,542.20, 1,121,102,313.30 and 704,354,821.20
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Solution
The fourth proportional to 747,401,542.20, 1,121,102,313.30 and 704,354,821.20 is: 1,056,532,231.80
Step by Step Solution
- Step 1: Write the proportion equation
747,401,542.20 : 1,121,102,313.30 = 704,354,821.20 : x - Step 2: Convert to fraction form
747,401,542.20/1,121,102,313.30 = 704,354,821.20/x - Step 3: Cross multiply
747,401,542.20x = 1,121,102,313.30 × 704,354,821.20 - Step 4: Simplify right side
747,401,542.20x = 789,653,819,431,327,872 - Step 5: Solve for x
x = 789,653,819,431,327,872/747,401,542.20 - Step 6: Final answer
x = 1,056,532,231.80
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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.