Home / 742,644.38-1,112,968.74-405,179.36

Finding the Fourth Proportional to 742,644.38, 1,112,968.74 and 405,179.36

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Solution

The fourth proportional to 742,644.38, 1,112,968.74 and 405,179.36 is: 607,224.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,644.38 : 1,112,968.74 = 405,179.36 : x
  2. Step 2: Convert to fraction form
    742,644.38/1,112,968.74 = 405,179.36/x
  3. Step 3: Cross multiply
    742,644.38x = 1,112,968.74 × 405,179.36
  4. Step 4: Simplify right side
    742,644.38x = 450,951,961,773.21
  5. Step 5: Solve for x
    x = 450,951,961,773.21/742,644.38
  6. Step 6: Final answer
    x = 607,224.63

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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.