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Finding the Fourth Proportional to 817,660, 1,226,490 and 226,684

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Solution

The fourth proportional to 817,660, 1,226,490 and 226,684 is: 340,026

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,660 : 1,226,490 = 226,684 : x
  2. Step 2: Convert to fraction form
    817,660/1,226,490 = 226,684/x
  3. Step 3: Cross multiply
    817,660x = 1,226,490 × 226,684
  4. Step 4: Simplify right side
    817,660x = 278,025,659,160
  5. Step 5: Solve for x
    x = 278,025,659,160/817,660
  6. Step 6: Final answer
    x = 340,026

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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.