Finding the Fourth Proportional to 1,276,431.36, 1,761,478.56 and 695,659.20
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Solution
The fourth proportional to 1,276,431.36, 1,761,478.56 and 695,659.20 is: 960,011.49
Step by Step Solution
- Step 1: Write the proportion equation
1,276,431.36 : 1,761,478.56 = 695,659.20 : x - Step 2: Convert to fraction form
1,276,431.36/1,761,478.56 = 695,659.20/x - Step 3: Cross multiply
1,276,431.36x = 1,761,478.56 × 695,659.20 - Step 4: Simplify right side
1,276,431.36x = 1,225,388,765,866.75 - Step 5: Solve for x
x = 1,225,388,765,866.75/1,276,431.36 - Step 6: Final answer
x = 960,011.49
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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.