Finding the Fourth Proportional to 1,261,420.29, 1,892,317.68 and 408,205.98
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Solution
The fourth proportional to 1,261,420.29, 1,892,317.68 and 408,205.98 is: 612,369.56
Step by Step Solution
- Step 1: Write the proportion equation
1,261,420.29 : 1,892,317.68 = 408,205.98 : x - Step 2: Convert to fraction form
1,261,420.29/1,892,317.68 = 408,205.98/x - Step 3: Cross multiply
1,261,420.29x = 1,892,317.68 × 408,205.98 - Step 4: Simplify right side
1,261,420.29x = 772,455,393,035.73 - Step 5: Solve for x
x = 772,455,393,035.73/1,261,420.29 - Step 6: Final answer
x = 612,369.56
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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.