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Finding the Fourth Proportional to 412,860.40, 619,290.60 and 360,372.40

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Solution

The fourth proportional to 412,860.40, 619,290.60 and 360,372.40 is: 540,558.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,860.40 : 619,290.60 = 360,372.40 : x
  2. Step 2: Convert to fraction form
    412,860.40/619,290.60 = 360,372.40/x
  3. Step 3: Cross multiply
    412,860.40x = 619,290.60 × 360,372.40
  4. Step 4: Simplify right side
    412,860.40x = 223,175,239,819.44
  5. Step 5: Solve for x
    x = 223,175,239,819.44/412,860.40
  6. Step 6: Final answer
    x = 540,558.60

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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.