Finding the Fourth Proportional to 642,711.80, 964,067.70 and 476,823.80
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Solution
The fourth proportional to 642,711.80, 964,067.70 and 476,823.80 is: 715,235.70
Step by Step Solution
- Step 1: Write the proportion equation
642,711.80 : 964,067.70 = 476,823.80 : x - Step 2: Convert to fraction form
642,711.80/964,067.70 = 476,823.80/x - Step 3: Cross multiply
642,711.80x = 964,067.70 × 476,823.80 - Step 4: Simplify right side
642,711.80x = 459,690,424,171.26 - Step 5: Solve for x
x = 459,690,424,171.26/642,711.80 - Step 6: Final answer
x = 715,235.70
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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.