Finding the Fourth Proportional to 858,793,922.16, 1,288,190,686.41 and 245,378,155.20
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Solution
The fourth proportional to 858,793,922.16, 1,288,190,686.41 and 245,378,155.20 is: 368,067,176.56
Step by Step Solution
- Step 1: Write the proportion equation
858,793,922.16 : 1,288,190,686.41 = 245,378,155.20 : x - Step 2: Convert to fraction form
858,793,922.16/1,288,190,686.41 = 245,378,155.20/x - Step 3: Cross multiply
858,793,922.16x = 1,288,190,686.41 × 245,378,155.20 - Step 4: Simplify right side
858,793,922.16x = 316,093,854,177,107,520 - Step 5: Solve for x
x = 316,093,854,177,107,520/858,793,922.16 - Step 6: Final answer
x = 368,067,176.56
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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.