Finding the Fourth Proportional to 427,682,403.20, 641,523,604.80 and 427,682,403.20
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Solution
The fourth proportional to 427,682,403.20, 641,523,604.80 and 427,682,403.20 is: 641,523,604.80
Step by Step Solution
- Step 1: Write the proportion equation
427,682,403.20 : 641,523,604.80 = 427,682,403.20 : x - Step 2: Convert to fraction form
427,682,403.20/641,523,604.80 = 427,682,403.20/x - Step 3: Cross multiply
427,682,403.20x = 641,523,604.80 × 427,682,403.20 - Step 4: Simplify right side
427,682,403.20x = 274,368,357,010,391,040 - Step 5: Solve for x
x = 274,368,357,010,391,040/427,682,403.20 - Step 6: Final answer
x = 641,523,604.80
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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.