Finding the Fourth Proportional to 1,391,119.36, 1,919,715.84 and 755,215.36
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Solution
The fourth proportional to 1,391,119.36, 1,919,715.84 and 755,215.36 is: 1,042,181.52
Step by Step Solution
- Step 1: Write the proportion equation
1,391,119.36 : 1,919,715.84 = 755,215.36 : x - Step 2: Convert to fraction form
1,391,119.36/1,919,715.84 = 755,215.36/x - Step 3: Cross multiply
1,391,119.36x = 1,919,715.84 × 755,215.36 - Step 4: Simplify right side
1,391,119.36x = 1,449,798,889,203.30 - Step 5: Solve for x
x = 1,449,798,889,203.30/1,391,119.36 - Step 6: Final answer
x = 1,042,181.52
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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.