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Finding the Fourth Proportional to 617,449.50, 925,911.54 and 380,728.62

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Solution

The fourth proportional to 617,449.50, 925,911.54 and 380,728.62 is: 570,930.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,449.50 : 925,911.54 = 380,728.62 : x
  2. Step 2: Convert to fraction form
    617,449.50/925,911.54 = 380,728.62/x
  3. Step 3: Cross multiply
    617,449.50x = 925,911.54 × 380,728.62
  4. Step 4: Simplify right side
    617,449.50x = 352,521,022,866.28
  5. Step 5: Solve for x
    x = 352,521,022,866.28/617,449.50
  6. Step 6: Final answer
    x = 570,930.94

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1.5x scale

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.