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Finding the Fourth Proportional to 617,866.80, 925,633.80 and 317,324.40

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Solution

The fourth proportional to 617,866.80, 925,633.80 and 317,324.40 is: 475,387.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,866.80 : 925,633.80 = 317,324.40 : x
  2. Step 2: Convert to fraction form
    617,866.80/925,633.80 = 317,324.40/x
  3. Step 3: Cross multiply
    617,866.80x = 925,633.80 × 317,324.40
  4. Step 4: Simplify right side
    617,866.80x = 293,726,190,204.72
  5. Step 5: Solve for x
    x = 293,726,190,204.72/617,866.80
  6. Step 6: Final answer
    x = 475,387.56

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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.