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Finding the Fourth Proportional to 492,777.30, 739,165.95 and 405,297.30

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Solution

The fourth proportional to 492,777.30, 739,165.95 and 405,297.30 is: 607,945.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,777.30 : 739,165.95 = 405,297.30 : x
  2. Step 2: Convert to fraction form
    492,777.30/739,165.95 = 405,297.30/x
  3. Step 3: Cross multiply
    492,777.30x = 739,165.95 × 405,297.30
  4. Step 4: Simplify right side
    492,777.30x = 299,581,963,786.94
  5. Step 5: Solve for x
    x = 299,581,963,786.94/492,777.30
  6. Step 6: Final answer
    x = 607,945.95

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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.