Finding the Fourth Proportional to 7,381,605.80, 11,072,408.70 and 6,436,821.80
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Solution
The fourth proportional to 7,381,605.80, 11,072,408.70 and 6,436,821.80 is: 9,655,232.70
Step by Step Solution
- Step 1: Write the proportion equation
7,381,605.80 : 11,072,408.70 = 6,436,821.80 : x - Step 2: Convert to fraction form
7,381,605.80/11,072,408.70 = 6,436,821.80/x - Step 3: Cross multiply
7,381,605.80x = 11,072,408.70 × 6,436,821.80 - Step 4: Simplify right side
7,381,605.80x = 71,271,121,698,669.66 - Step 5: Solve for x
x = 71,271,121,698,669.66/7,381,605.80 - Step 6: Final answer
x = 9,655,232.70
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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.