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Finding the Fourth Proportional to 1,244,408.80, 1,865,230.80 and 683,845.60

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Solution

The fourth proportional to 1,244,408.80, 1,865,230.80 and 683,845.60 is: 1,025,008.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244,408.80 : 1,865,230.80 = 683,845.60 : x
  2. Step 2: Convert to fraction form
    1,244,408.80/1,865,230.80 = 683,845.60/x
  3. Step 3: Cross multiply
    1,244,408.80x = 1,865,230.80 × 683,845.60
  4. Step 4: Simplify right side
    1,244,408.80x = 1,275,529,875,564.48
  5. Step 5: Solve for x
    x = 1,275,529,875,564.48/1,244,408.80
  6. Step 6: Final answer
    x = 1,025,008.72

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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.