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Finding the Fourth Proportional to 619,768.26, 928,779.41 and 492,845.31

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Solution

The fourth proportional to 619,768.26, 928,779.41 and 492,845.31 is: 738,573.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,768.26 : 928,779.41 = 492,845.31 : x
  2. Step 2: Convert to fraction form
    619,768.26/928,779.41 = 492,845.31/x
  3. Step 3: Cross multiply
    619,768.26x = 928,779.41 × 492,845.31
  4. Step 4: Simplify right side
    619,768.26x = 457,744,577,475.18
  5. Step 5: Solve for x
    x = 457,744,577,475.18/619,768.26
  6. Step 6: Final answer
    x = 738,573.77

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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.