Home / 742,645.38-1,112,970.24-405,180.33

Finding the Fourth Proportional to 742,645.38, 1,112,970.24 and 405,180.33

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Solution

The fourth proportional to 742,645.38, 1,112,970.24 and 405,180.33 is: 607,226.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,645.38 : 1,112,970.24 = 405,180.33 : x
  2. Step 2: Convert to fraction form
    742,645.38/1,112,970.24 = 405,180.33/x
  3. Step 3: Cross multiply
    742,645.38x = 1,112,970.24 × 405,180.33
  4. Step 4: Simplify right side
    742,645.38x = 450,953,649,123.38
  5. Step 5: Solve for x
    x = 450,953,649,123.38/742,645.38
  6. Step 6: Final answer
    x = 607,226.09

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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.