Finding the Fourth Proportional to 1,188,620.76, 1,782,911.70 and 478,630.92
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Solution
The fourth proportional to 1,188,620.76, 1,782,911.70 and 478,630.92 is: 717,938.55
Step by Step Solution
- Step 1: Write the proportion equation
1,188,620.76 : 1,782,911.70 = 478,630.92 : x - Step 2: Convert to fraction form
1,188,620.76/1,782,911.70 = 478,630.92/x - Step 3: Cross multiply
1,188,620.76x = 1,782,911.70 × 478,630.92 - Step 4: Simplify right side
1,188,620.76x = 853,356,667,249.76 - Step 5: Solve for x
x = 853,356,667,249.76/1,188,620.76 - Step 6: Final answer
x = 717,938.55
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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.