Finding the Fourth Proportional to 1,278,709.12, 1,764,676.16 and 735,021.44
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Solution
The fourth proportional to 1,278,709.12, 1,764,676.16 and 735,021.44 is: 1,014,362.68
Step by Step Solution
- Step 1: Write the proportion equation
1,278,709.12 : 1,764,676.16 = 735,021.44 : x - Step 2: Convert to fraction form
1,278,709.12/1,764,676.16 = 735,021.44/x - Step 3: Cross multiply
1,278,709.12x = 1,764,676.16 × 735,021.44 - Step 4: Simplify right side
1,278,709.12x = 1,297,074,812,256.87 - Step 5: Solve for x
x = 1,297,074,812,256.87/1,278,709.12 - Step 6: Final answer
x = 1,014,362.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.