Finding the Fourth Proportional to 1,438,450, 2,157,778.68 and 551,986
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Solution
The fourth proportional to 1,438,450, 2,157,778.68 and 551,986 is: 828,018.79
Step by Step Solution
- Step 1: Write the proportion equation
1,438,450 : 2,157,778.68 = 551,986 : x - Step 2: Convert to fraction form
1,438,450/2,157,778.68 = 551,986/x - Step 3: Cross multiply
1,438,450x = 2,157,778.68 × 551,986 - Step 4: Simplify right side
1,438,450x = 1,191,063,622,458.48 - Step 5: Solve for x
x = 1,191,063,622,458.48/1,438,450 - Step 6: Final answer
x = 828,018.79
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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.