Finding the Fourth Proportional to 608,717.10, 911,107.35 and 431,570.10
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Solution
The fourth proportional to 608,717.10, 911,107.35 and 431,570.10 is: 645,959.66
Step by Step Solution
- Step 1: Write the proportion equation
608,717.10 : 911,107.35 = 431,570.10 : x - Step 2: Convert to fraction form
608,717.10/911,107.35 = 431,570.10/x - Step 3: Cross multiply
608,717.10x = 911,107.35 × 431,570.10 - Step 4: Simplify right side
608,717.10x = 393,206,690,150.24 - Step 5: Solve for x
x = 393,206,690,150.24/608,717.10 - Step 6: Final answer
x = 645,959.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.