Home / 742,640.88-1,112,963.49-405,175.83

Finding the Fourth Proportional to 742,640.88, 1,112,963.49 and 405,175.83

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Solution

The fourth proportional to 742,640.88, 1,112,963.49 and 405,175.83 is: 607,219.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,640.88 : 1,112,963.49 = 405,175.83 : x
  2. Step 2: Convert to fraction form
    742,640.88/1,112,963.49 = 405,175.83/x
  3. Step 3: Cross multiply
    742,640.88x = 1,112,963.49 × 405,175.83
  4. Step 4: Simplify right side
    742,640.88x = 450,945,905,820.45
  5. Step 5: Solve for x
    x = 450,945,905,820.45/742,640.88
  6. Step 6: Final answer
    x = 607,219.34

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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.