Finding the Fourth Proportional to 1,222,765.99, 1,687,469.76 and 678,901.80
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Solution
The fourth proportional to 1,222,765.99, 1,687,469.76 and 678,901.80 is: 936,913.74
Step by Step Solution
- Step 1: Write the proportion equation
1,222,765.99 : 1,687,469.76 = 678,901.80 : x - Step 2: Convert to fraction form
1,222,765.99/1,687,469.76 = 678,901.80/x - Step 3: Cross multiply
1,222,765.99x = 1,687,469.76 × 678,901.80 - Step 4: Simplify right side
1,222,765.99x = 1,145,626,257,509.57 - Step 5: Solve for x
x = 1,145,626,257,509.57/1,222,765.99 - Step 6: Final answer
x = 936,913.74
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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.