Finding the Fourth Proportional to 8,281,828.20, 12,394,748.70 and 7,274,058.60
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Solution
The fourth proportional to 8,281,828.20, 12,394,748.70 and 7,274,058.60 is: 10,886,500.69
Step by Step Solution
- Step 1: Write the proportion equation
8,281,828.20 : 12,394,748.70 = 7,274,058.60 : x - Step 2: Convert to fraction form
8,281,828.20/12,394,748.70 = 7,274,058.60/x - Step 3: Cross multiply
8,281,828.20x = 12,394,748.70 × 7,274,058.60 - Step 4: Simplify right side
8,281,828.20x = 90,160,128,376,073.81 - Step 5: Solve for x
x = 90,160,128,376,073.81/8,281,828.20 - Step 6: Final answer
x = 10,886,500.69
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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.