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Finding the Fourth Proportional to 494,858.60, 742,725.30 and 423,999.80

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Solution

The fourth proportional to 494,858.60, 742,725.30 and 423,999.80 is: 636,374.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,858.60 : 742,725.30 = 423,999.80 : x
  2. Step 2: Convert to fraction form
    494,858.60/742,725.30 = 423,999.80/x
  3. Step 3: Cross multiply
    494,858.60x = 742,725.30 × 423,999.80
  4. Step 4: Simplify right side
    494,858.60x = 314,915,378,654.94
  5. Step 5: Solve for x
    x = 314,915,378,654.94/494,858.60
  6. Step 6: Final answer
    x = 636,374.47

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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.