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Finding the Fourth Proportional to 1,742,743.51, 2,404,995.60 and 978,797.14

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Solution

The fourth proportional to 1,742,743.51, 2,404,995.60 and 978,797.14 is: 1,350,745.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742,743.51 : 2,404,995.60 = 978,797.14 : x
  2. Step 2: Convert to fraction form
    1,742,743.51/2,404,995.60 = 978,797.14/x
  3. Step 3: Cross multiply
    1,742,743.51x = 2,404,995.60 × 978,797.14
  4. Step 4: Simplify right side
    1,742,743.51x = 2,354,002,814,992.58
  5. Step 5: Solve for x
    x = 2,354,002,814,992.58/1,742,743.51
  6. Step 6: Final answer
    x = 1,350,745.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.