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Finding the Fourth Proportional to 978,628.66, 1,467,590.80 and 338,758.54

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Solution

The fourth proportional to 978,628.66, 1,467,590.80 and 338,758.54 is: 508,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,628.66 : 1,467,590.80 = 338,758.54 : x
  2. Step 2: Convert to fraction form
    978,628.66/1,467,590.80 = 338,758.54/x
  3. Step 3: Cross multiply
    978,628.66x = 1,467,590.80 × 338,758.54
  4. Step 4: Simplify right side
    978,628.66x = 497,158,916,725.43
  5. Step 5: Solve for x
    x = 497,158,916,725.43/978,628.66
  6. Step 6: Final answer
    x = 508,015.90

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Why These Related Problems?

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