Finding the Fourth Proportional to 1,313,216.20, 1,812,237.78 and 709,604.20
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Solution
The fourth proportional to 1,313,216.20, 1,812,237.78 and 709,604.20 is: 979,253.48
Step by Step Solution
- Step 1: Write the proportion equation
1,313,216.20 : 1,812,237.78 = 709,604.20 : x - Step 2: Convert to fraction form
1,313,216.20/1,812,237.78 = 709,604.20/x - Step 3: Cross multiply
1,313,216.20x = 1,812,237.78 × 709,604.20 - Step 4: Simplify right side
1,313,216.20x = 1,285,971,540,086.68 - Step 5: Solve for x
x = 1,285,971,540,086.68/1,313,216.20 - Step 6: Final answer
x = 979,253.48
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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.