Finding the Fourth Proportional to 858,781.20, 1,288,171.80 and 297,815.70
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Solution
The fourth proportional to 858,781.20, 1,288,171.80 and 297,815.70 is: 446,723.55
Step by Step Solution
- Step 1: Write the proportion equation
858,781.20 : 1,288,171.80 = 297,815.70 : x - Step 2: Convert to fraction form
858,781.20/1,288,171.80 = 297,815.70/x - Step 3: Cross multiply
858,781.20x = 1,288,171.80 × 297,815.70 - Step 4: Simplify right side
858,781.20x = 383,637,786,337.26 - Step 5: Solve for x
x = 383,637,786,337.26/858,781.20 - Step 6: Final answer
x = 446,723.55
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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.