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Finding the Fourth Proportional to 671,156.37, 926,198.87 and 384,693.21

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Solution

The fourth proportional to 671,156.37, 926,198.87 and 384,693.21 is: 530,878.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,156.37 : 926,198.87 = 384,693.21 : x
  2. Step 2: Convert to fraction form
    671,156.37/926,198.87 = 384,693.21/x
  3. Step 3: Cross multiply
    671,156.37x = 926,198.87 × 384,693.21
  4. Step 4: Simplify right side
    671,156.37x = 356,302,414,475.21
  5. Step 5: Solve for x
    x = 356,302,414,475.21/671,156.37
  6. Step 6: Final answer
    x = 530,878.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.