Finding the Fourth Proportional to 1,221,209.40, 1,685,350.62 and 677,517.96
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Solution
The fourth proportional to 1,221,209.40, 1,685,350.62 and 677,517.96 is: 935,020.08
Step by Step Solution
- Step 1: Write the proportion equation
1,221,209.40 : 1,685,350.62 = 677,517.96 : x - Step 2: Convert to fraction form
1,221,209.40/1,685,350.62 = 677,517.96/x - Step 3: Cross multiply
1,221,209.40x = 1,685,350.62 × 677,517.96 - Step 4: Simplify right side
1,221,209.40x = 1,141,855,313,947.14 - Step 5: Solve for x
x = 1,141,855,313,947.14/1,221,209.40 - Step 6: Final answer
x = 935,020.08
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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.