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Finding the Fourth Proportional to 1,244,392.80, 1,865,206.80 and 683,829.60

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Solution

The fourth proportional to 1,244,392.80, 1,865,206.80 and 683,829.60 is: 1,024,984.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244,392.80 : 1,865,206.80 = 683,829.60 : x
  2. Step 2: Convert to fraction form
    1,244,392.80/1,865,206.80 = 683,829.60/x
  3. Step 3: Cross multiply
    1,244,392.80x = 1,865,206.80 × 683,829.60
  4. Step 4: Simplify right side
    1,244,392.80x = 1,275,483,619,961.28
  5. Step 5: Solve for x
    x = 1,275,483,619,961.28/1,244,392.80
  6. Step 6: Final answer
    x = 1,024,984.73

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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.