Finding the Fourth Proportional to 1,369,925,868.38, 1,890,497,698.48 and 743,394,296.32
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Solution
The fourth proportional to 1,369,925,868.38, 1,890,497,698.48 and 743,394,296.32 is: 1,025,884,128.99
Step by Step Solution
- Step 1: Write the proportion equation
1,369,925,868.38 : 1,890,497,698.48 = 743,394,296.32 : x - Step 2: Convert to fraction form
1,369,925,868.38/1,890,497,698.48 = 743,394,296.32/x - Step 3: Cross multiply
1,369,925,868.38x = 1,890,497,698.48 × 743,394,296.32 - Step 4: Simplify right side
1,369,925,868.38x = 1,405,385,206,267,768,832 - Step 5: Solve for x
x = 1,405,385,206,267,768,832/1,369,925,868.38 - Step 6: Final answer
x = 1,025,884,128.99
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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.