Home / 742,643.38-1,112,967.24-405,178.33

Finding the Fourth Proportional to 742,643.38, 1,112,967.24 and 405,178.33

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Solution

The fourth proportional to 742,643.38, 1,112,967.24 and 405,178.33 is: 607,223.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,643.38 : 1,112,967.24 = 405,178.33 : x
  2. Step 2: Convert to fraction form
    742,643.38/1,112,967.24 = 405,178.33/x
  3. Step 3: Cross multiply
    742,643.38x = 1,112,967.24 × 405,178.33
  4. Step 4: Simplify right side
    742,643.38x = 450,950,207,647.91
  5. Step 5: Solve for x
    x = 450,950,207,647.91/742,643.38
  6. Step 6: Final answer
    x = 607,223.09

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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.