Finding the Fourth Proportional to 431,568,203.40, 647,352,305.10 and 259,239,601.80
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Solution
The fourth proportional to 431,568,203.40, 647,352,305.10 and 259,239,601.80 is: 388,859,402.70
Step by Step Solution
- Step 1: Write the proportion equation
431,568,203.40 : 647,352,305.10 = 259,239,601.80 : x - Step 2: Convert to fraction form
431,568,203.40/647,352,305.10 = 259,239,601.80/x - Step 3: Cross multiply
431,568,203.40x = 647,352,305.10 × 259,239,601.80 - Step 4: Simplify right side
431,568,203.40x = 167,819,353,798,436,128 - Step 5: Solve for x
x = 167,819,353,798,436,128/431,568,203.40 - Step 6: Final answer
x = 388,859,402.70
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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.