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Finding the Fourth Proportional to 673,472.82, 929,414.22 and 383,076.90

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Solution

The fourth proportional to 673,472.82, 929,414.22 and 383,076.90 is: 528,658.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,472.82 : 929,414.22 = 383,076.90 : x
  2. Step 2: Convert to fraction form
    673,472.82/929,414.22 = 383,076.90/x
  3. Step 3: Cross multiply
    673,472.82x = 929,414.22 × 383,076.90
  4. Step 4: Simplify right side
    673,472.82x = 356,037,118,213.52
  5. Step 5: Solve for x
    x = 356,037,118,213.52/673,472.82
  6. Step 6: Final answer
    x = 528,658.48

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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.