Finding the Fourth Proportional to 1,277,533.20, 1,916,699.51 and 378,979.63
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Solution
The fourth proportional to 1,277,533.20, 1,916,699.51 and 378,979.63 is: 568,588.02
Step by Step Solution
- Step 1: Write the proportion equation
1,277,533.20 : 1,916,699.51 = 378,979.63 : x - Step 2: Convert to fraction form
1,277,533.20/1,916,699.51 = 378,979.63/x - Step 3: Cross multiply
1,277,533.20x = 1,916,699.51 × 378,979.63 - Step 4: Simplify right side
1,277,533.20x = 726,390,071,120.98 - Step 5: Solve for x
x = 726,390,071,120.98/1,277,533.20 - Step 6: Final answer
x = 568,588.02
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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.