Finding the Fourth Proportional to 1,126,267.12, 1,553,868.12 and 642,491.92
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Solution
The fourth proportional to 1,126,267.12, 1,553,868.12 and 642,491.92 is: 886,421.79
Step by Step Solution
- Step 1: Write the proportion equation
1,126,267.12 : 1,553,868.12 = 642,491.92 : x - Step 2: Convert to fraction form
1,126,267.12/1,553,868.12 = 642,491.92/x - Step 3: Cross multiply
1,126,267.12x = 1,553,868.12 × 642,491.92 - Step 4: Simplify right side
1,126,267.12x = 998,347,711,845.59 - Step 5: Solve for x
x = 998,347,711,845.59/1,126,267.12 - Step 6: Final answer
x = 886,421.79
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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.