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Finding the Fourth Proportional to 2,145,713.22, 2,961,136.44 and 1,178,906.13

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Solution

The fourth proportional to 2,145,713.22, 2,961,136.44 and 1,178,906.13 is: 1,626,919.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145,713.22 : 2,961,136.44 = 1,178,906.13 : x
  2. Step 2: Convert to fraction form
    2,145,713.22/2,961,136.44 = 1,178,906.13/x
  3. Step 3: Cross multiply
    2,145,713.22x = 2,961,136.44 × 1,178,906.13
  4. Step 4: Simplify right side
    2,145,713.22x = 3,490,901,900,882.38
  5. Step 5: Solve for x
    x = 3,490,901,900,882.38/2,145,713.22
  6. Step 6: Final answer
    x = 1,626,919.14

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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.