Finding the Fourth Proportional to 3,780,949.61, 5,217,686.58 and 2,149,357.07
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Solution
The fourth proportional to 3,780,949.61, 5,217,686.58 and 2,149,357.07 is: 2,966,099.17
Step by Step Solution
- Step 1: Write the proportion equation
3,780,949.61 : 5,217,686.58 = 2,149,357.07 : x - Step 2: Convert to fraction form
3,780,949.61/5,217,686.58 = 2,149,357.07/x - Step 3: Cross multiply
3,780,949.61x = 5,217,686.58 × 2,149,357.07 - Step 4: Simplify right side
3,780,949.61x = 11,214,671,513,678.69 - Step 5: Solve for x
x = 11,214,671,513,678.69/3,780,949.61 - Step 6: Final answer
x = 2,966,099.17
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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.