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Finding the Fourth Proportional to 671,484.72, 926,728.92 and 385,003.92

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Solution

The fourth proportional to 671,484.72, 926,728.92 and 385,003.92 is: 531,351.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,484.72 : 926,728.92 = 385,003.92 : x
  2. Step 2: Convert to fraction form
    671,484.72/926,728.92 = 385,003.92/x
  3. Step 3: Cross multiply
    671,484.72x = 926,728.92 × 385,003.92
  4. Step 4: Simplify right side
    671,484.72x = 356,794,266,977.37
  5. Step 5: Solve for x
    x = 356,794,266,977.37/671,484.72
  6. Step 6: Final answer
    x = 531,351.28

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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.