Finding the Fourth Proportional to 2,138,256.90, 2,950,794.36 and 1,278,817.13
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Solution
The fourth proportional to 2,138,256.90, 2,950,794.36 and 1,278,817.13 is: 1,764,767.55
Step by Step Solution
- Step 1: Write the proportion equation
2,138,256.90 : 2,950,794.36 = 1,278,817.13 : x - Step 2: Convert to fraction form
2,138,256.90/2,950,794.36 = 1,278,817.13/x - Step 3: Cross multiply
2,138,256.90x = 2,950,794.36 × 1,278,817.13 - Step 4: Simplify right side
2,138,256.90x = 3,773,526,382,052.37 - Step 5: Solve for x
x = 3,773,526,382,052.37/2,138,256.90 - Step 6: Final answer
x = 1,764,767.55
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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.