Finding the Fourth Proportional to 1,020,201,366.52, 1,408,312,299.38 and 685,867,790.44
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Solution
The fourth proportional to 1,020,201,366.52, 1,408,312,299.38 and 685,867,790.44 is: 946,789,601.27
Step by Step Solution
- Step 1: Write the proportion equation
1,020,201,366.52 : 1,408,312,299.38 = 685,867,790.44 : x - Step 2: Convert to fraction form
1,020,201,366.52/1,408,312,299.38 = 685,867,790.44/x - Step 3: Cross multiply
1,020,201,366.52x = 1,408,312,299.38 × 685,867,790.44 - Step 4: Simplify right side
1,020,201,366.52x = 965,916,045,025,236,480 - Step 5: Solve for x
x = 965,916,045,025,236,480/1,020,201,366.52 - Step 6: Final answer
x = 946,789,601.27
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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.