Finding the Fourth Proportional to 1,358,128.91, 1,874,108.20 and 785,205.99
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Solution
The fourth proportional to 1,358,128.91, 1,874,108.20 and 785,205.99 is: 1,083,520.85
Step by Step Solution
- Step 1: Write the proportion equation
1,358,128.91 : 1,874,108.20 = 785,205.99 : x - Step 2: Convert to fraction form
1,358,128.91/1,874,108.20 = 785,205.99/x - Step 3: Cross multiply
1,358,128.91x = 1,874,108.20 × 785,205.99 - Step 4: Simplify right side
1,358,128.91x = 1,471,560,984,548.12 - Step 5: Solve for x
x = 1,471,560,984,548.12/1,358,128.91 - Step 6: Final answer
x = 1,083,520.85
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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.