Finding the Fourth Proportional to 1,991,735,793.41, 2,987,398,955.57 and 663,620,386.14
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Solution
The fourth proportional to 1,991,735,793.41, 2,987,398,955.57 and 663,620,386.14 is: 995,362,364.33
Step by Step Solution
- Step 1: Write the proportion equation
1,991,735,793.41 : 2,987,398,955.57 = 663,620,386.14 : x - Step 2: Convert to fraction form
1,991,735,793.41/2,987,398,955.57 = 663,620,386.14/x - Step 3: Cross multiply
1,991,735,793.41x = 2,987,398,955.57 × 663,620,386.14 - Step 4: Simplify right side
1,991,735,793.41x = 1,982,498,848,446,277,888 - Step 5: Solve for x
x = 1,982,498,848,446,277,888/1,991,735,793.41 - Step 6: Final answer
x = 995,362,364.33
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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.