Home / 742,639.37-1,112,961.24-405,174.34

Finding the Fourth Proportional to 742,639.37, 1,112,961.24 and 405,174.34

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Solution

The fourth proportional to 742,639.37, 1,112,961.24 and 405,174.34 is: 607,217.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,639.37 : 1,112,961.24 = 405,174.34 : x
  2. Step 2: Convert to fraction form
    742,639.37/1,112,961.24 = 405,174.34/x
  3. Step 3: Cross multiply
    742,639.37x = 1,112,961.24 × 405,174.34
  4. Step 4: Simplify right side
    742,639.37x = 450,943,335,862.58
  5. Step 5: Solve for x
    x = 450,943,335,862.58/742,639.37
  6. Step 6: Final answer
    x = 607,217.12

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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.