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Finding the Fourth Proportional to 494,762.72, 682,772.64 and 279,898.34

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Solution

The fourth proportional to 494,762.72, 682,772.64 and 279,898.34 is: 386,259.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,762.72 : 682,772.64 = 279,898.34 : x
  2. Step 2: Convert to fraction form
    494,762.72/682,772.64 = 279,898.34/x
  3. Step 3: Cross multiply
    494,762.72x = 682,772.64 × 279,898.34
  4. Step 4: Simplify right side
    494,762.72x = 191,106,928,533.42
  5. Step 5: Solve for x
    x = 191,106,928,533.42/494,762.72
  6. Step 6: Final answer
    x = 386,259.76

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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.