Finding the Fourth Proportional to 812,563.16, 1,121,340.30 and 449,979.08
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Solution
The fourth proportional to 812,563.16, 1,121,340.30 and 449,979.08 is: 620,972.87
Step by Step Solution
- Step 1: Write the proportion equation
812,563.16 : 1,121,340.30 = 449,979.08 : x - Step 2: Convert to fraction form
812,563.16/1,121,340.30 = 449,979.08/x - Step 3: Cross multiply
812,563.16x = 1,121,340.30 × 449,979.08 - Step 4: Simplify right side
812,563.16x = 504,579,676,560.92 - Step 5: Solve for x
x = 504,579,676,560.92/812,563.16 - Step 6: Final answer
x = 620,972.87
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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.