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Finding the Fourth Proportional to 444,410, 666,615 and 111,986

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Solution

The fourth proportional to 444,410, 666,615 and 111,986 is: 167,979

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,410 : 666,615 = 111,986 : x
  2. Step 2: Convert to fraction form
    444,410/666,615 = 111,986/x
  3. Step 3: Cross multiply
    444,410x = 666,615 × 111,986
  4. Step 4: Simplify right side
    444,410x = 74,651,547,390
  5. Step 5: Solve for x
    x = 74,651,547,390/444,410
  6. Step 6: Final answer
    x = 167,979

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.