Finding the Fourth Proportional to 490,286,651.36, 676,571,125.65 and 278,565,515.99
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Solution
The fourth proportional to 490,286,651.36, 676,571,125.65 and 278,565,515.99 is: 384,406,518.50
Step by Step Solution
- Step 1: Write the proportion equation
490,286,651.36 : 676,571,125.65 = 278,565,515.99 : x - Step 2: Convert to fraction form
490,286,651.36/676,571,125.65 = 278,565,515.99/x - Step 3: Cross multiply
490,286,651.36x = 676,571,125.65 × 278,565,515.99 - Step 4: Simplify right side
490,286,651.36x = 188,469,384,717,244,512 - Step 5: Solve for x
x = 188,469,384,717,244,512/490,286,651.36 - Step 6: Final answer
x = 384,406,518.50
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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.