Finding the Fourth Proportional to 1,918,215.43, 2,647,201.38 and 1,047,101.74
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Solution
The fourth proportional to 1,918,215.43, 2,647,201.38 and 1,047,101.74 is: 1,445,035.38
Step by Step Solution
- Step 1: Write the proportion equation
1,918,215.43 : 2,647,201.38 = 1,047,101.74 : x - Step 2: Convert to fraction form
1,918,215.43/2,647,201.38 = 1,047,101.74/x - Step 3: Cross multiply
1,918,215.43x = 2,647,201.38 × 1,047,101.74 - Step 4: Simplify right side
1,918,215.43x = 2,771,889,171,128.40 - Step 5: Solve for x
x = 2,771,889,171,128.40/1,918,215.43 - Step 6: Final answer
x = 1,445,035.38
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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.