Finding the Fourth Proportional to 1,186,138.13, 1,636,868.27 and 642,272.23
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Solution
The fourth proportional to 1,186,138.13, 1,636,868.27 and 642,272.23 is: 886,334.41
Step by Step Solution
- Step 1: Write the proportion equation
1,186,138.13 : 1,636,868.27 = 642,272.23 : x - Step 2: Convert to fraction form
1,186,138.13/1,636,868.27 = 642,272.23/x - Step 3: Cross multiply
1,186,138.13x = 1,636,868.27 × 642,272.23 - Step 4: Simplify right side
1,186,138.13x = 1,051,315,037,640.91 - Step 5: Solve for x
x = 1,051,315,037,640.91/1,186,138.13 - Step 6: Final answer
x = 886,334.41
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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.