Home / 742,642.38-1,112,965.74-405,177.33

Finding the Fourth Proportional to 742,642.38, 1,112,965.74 and 405,177.33

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Solution

The fourth proportional to 742,642.38, 1,112,965.74 and 405,177.33 is: 607,221.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,642.38 : 1,112,965.74 = 405,177.33 : x
  2. Step 2: Convert to fraction form
    742,642.38/1,112,965.74 = 405,177.33/x
  3. Step 3: Cross multiply
    742,642.38x = 1,112,965.74 × 405,177.33
  4. Step 4: Simplify right side
    742,642.38x = 450,948,486,914.67
  5. Step 5: Solve for x
    x = 450,948,486,914.67/742,642.38
  6. Step 6: Final answer
    x = 607,221.59

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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.