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Finding the Fourth Proportional to 619,310.40, 929,829.60 and 396,052.80

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Solution

The fourth proportional to 619,310.40, 929,829.60 and 396,052.80 is: 594,631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,310.40 : 929,829.60 = 396,052.80 : x
  2. Step 2: Convert to fraction form
    619,310.40/929,829.60 = 396,052.80/x
  3. Step 3: Cross multiply
    619,310.40x = 929,829.60 × 396,052.80
  4. Step 4: Simplify right side
    619,310.40x = 368,261,616,602.88
  5. Step 5: Solve for x
    x = 368,261,616,602.88/619,310.40
  6. Step 6: Final answer
    x = 594,631.73

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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.