Finding the Fourth Proportional to 4,215,781.38, 5,817,439.43 and 2,380,686.09
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Solution
The fourth proportional to 4,215,781.38, 5,817,439.43 and 2,380,686.09 is: 3,285,155.44
Step by Step Solution
- Step 1: Write the proportion equation
4,215,781.38 : 5,817,439.43 = 2,380,686.09 : x - Step 2: Convert to fraction form
4,215,781.38/5,817,439.43 = 2,380,686.09/x - Step 3: Cross multiply
4,215,781.38x = 5,817,439.43 × 2,380,686.09 - Step 4: Simplify right side
4,215,781.38x = 13,849,497,118,515.10 - Step 5: Solve for x
x = 13,849,497,118,515.10/4,215,781.38 - Step 6: Final answer
x = 3,285,155.44
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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.