Finding the Fourth Proportional to 812,358.28, 1,121,089.46 and 449,782.14
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Solution
The fourth proportional to 812,358.28, 1,121,089.46 and 449,782.14 is: 620,718.75
Step by Step Solution
- Step 1: Write the proportion equation
812,358.28 : 1,121,089.46 = 449,782.14 : x - Step 2: Convert to fraction form
812,358.28/1,121,089.46 = 449,782.14/x - Step 3: Cross multiply
812,358.28x = 1,121,089.46 × 449,782.14 - Step 4: Simplify right side
812,358.28x = 504,246,016,450.24 - Step 5: Solve for x
x = 504,246,016,450.24/812,358.28 - Step 6: Final answer
x = 620,718.75
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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.