Finding the Fourth Proportional to 1,112,815.99, 1,669,346.70 and 354,481.03
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Solution
The fourth proportional to 1,112,815.99, 1,669,346.70 and 354,481.03 is: 531,760.64
Step by Step Solution
- Step 1: Write the proportion equation
1,112,815.99 : 1,669,346.70 = 354,481.03 : x - Step 2: Convert to fraction form
1,112,815.99/1,669,346.70 = 354,481.03/x - Step 3: Cross multiply
1,112,815.99x = 1,669,346.70 × 354,481.03 - Step 4: Simplify right side
1,112,815.99x = 591,751,737,643.10 - Step 5: Solve for x
x = 591,751,737,643.10/1,112,815.99 - Step 6: Final answer
x = 531,760.64
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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.