Finding the Fourth Proportional to 2,138,278.20, 2,950,699.92 and 1,171,240.14
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Solution
The fourth proportional to 2,138,278.20, 2,950,699.92 and 1,171,240.14 is: 1,616,243.47
Step by Step Solution
- Step 1: Write the proportion equation
2,138,278.20 : 2,950,699.92 = 1,171,240.14 : x - Step 2: Convert to fraction form
2,138,278.20/2,950,699.92 = 1,171,240.14/x - Step 3: Cross multiply
2,138,278.20x = 2,950,699.92 × 1,171,240.14 - Step 4: Simplify right side
2,138,278.20x = 3,455,978,187,398.79 - Step 5: Solve for x
x = 3,455,978,187,398.79/2,138,278.20 - Step 6: Final answer
x = 1,616,243.47
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1.5x scale
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.