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Finding the Fourth Proportional to 494,856.60, 742,722.30 and 423,997.80

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Solution

The fourth proportional to 494,856.60, 742,722.30 and 423,997.80 is: 636,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,856.60 : 742,722.30 = 423,997.80 : x
  2. Step 2: Convert to fraction form
    494,856.60/742,722.30 = 423,997.80/x
  3. Step 3: Cross multiply
    494,856.60x = 742,722.30 × 423,997.80
  4. Step 4: Simplify right side
    494,856.60x = 314,912,621,210.94
  5. Step 5: Solve for x
    x = 314,912,621,210.94/494,856.60
  6. Step 6: Final answer
    x = 636,371.47

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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.