Finding the Fourth Proportional to 2,154,305.44, 2,972,905.68 and 1,187,525.44
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Solution
The fourth proportional to 2,154,305.44, 2,972,905.68 and 1,187,525.44 is: 1,638,765.36
Step by Step Solution
- Step 1: Write the proportion equation
2,154,305.44 : 2,972,905.68 = 1,187,525.44 : x - Step 2: Convert to fraction form
2,154,305.44/2,972,905.68 = 1,187,525.44/x - Step 3: Cross multiply
2,154,305.44x = 2,972,905.68 × 1,187,525.44 - Step 4: Simplify right side
2,154,305.44x = 3,530,401,125,720.50 - Step 5: Solve for x
x = 3,530,401,125,720.50/2,154,305.44 - Step 6: Final answer
x = 1,638,765.36
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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.