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Finding the Fourth Proportional to 617,863.80, 925,629.30 and 317,321.40

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Solution

The fourth proportional to 617,863.80, 925,629.30 and 317,321.40 is: 475,383.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,863.80 : 925,629.30 = 317,321.40 : x
  2. Step 2: Convert to fraction form
    617,863.80/925,629.30 = 317,321.40/x
  3. Step 3: Cross multiply
    617,863.80x = 925,629.30 × 317,321.40
  4. Step 4: Simplify right side
    617,863.80x = 293,721,985,357.02
  5. Step 5: Solve for x
    x = 293,721,985,357.02/617,863.80
  6. Step 6: Final answer
    x = 475,383.06

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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.