Finding the Fourth Proportional to 1,313,321.28, 1,812,383.37 and 709,709.28
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Solution
The fourth proportional to 1,313,321.28, 1,812,383.37 and 709,709.28 is: 979,398.81
Step by Step Solution
- Step 1: Write the proportion equation
1,313,321.28 : 1,812,383.37 = 709,709.28 : x - Step 2: Convert to fraction form
1,313,321.28/1,812,383.37 = 709,709.28/x - Step 3: Cross multiply
1,313,321.28x = 1,812,383.37 × 709,709.28 - Step 4: Simplify right side
1,313,321.28x = 1,286,265,296,606.67 - Step 5: Solve for x
x = 1,286,265,296,606.67/1,313,321.28 - Step 6: Final answer
x = 979,398.81
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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.