Finding the Fourth Proportional to 1,277,423.26, 1,916,142.05 and 378,871.76
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Solution
The fourth proportional to 1,277,423.26, 1,916,142.05 and 378,871.76 is: 568,309.77
Step by Step Solution
- Step 1: Write the proportion equation
1,277,423.26 : 1,916,142.05 = 378,871.76 : x - Step 2: Convert to fraction form
1,277,423.26/1,916,142.05 = 378,871.76/x - Step 3: Cross multiply
1,277,423.26x = 1,916,142.05 × 378,871.76 - Step 4: Simplify right side
1,277,423.26x = 725,972,116,631.04 - Step 5: Solve for x
x = 725,972,116,631.04/1,277,423.26 - Step 6: Final answer
x = 568,309.77
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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.