Finding the Fourth Proportional to 860,819.70, 1,291,229.55 and 261,776.10
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Solution
The fourth proportional to 860,819.70, 1,291,229.55 and 261,776.10 is: 392,664.15
Step by Step Solution
- Step 1: Write the proportion equation
860,819.70 : 1,291,229.55 = 261,776.10 : x - Step 2: Convert to fraction form
860,819.70/1,291,229.55 = 261,776.10/x - Step 3: Cross multiply
860,819.70x = 1,291,229.55 × 261,776.10 - Step 4: Simplify right side
860,819.70x = 338,013,035,803.76 - Step 5: Solve for x
x = 338,013,035,803.76/860,819.70 - Step 6: Final answer
x = 392,664.15
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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.