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Finding the Fourth Proportional to 28,288,978.92, 39,048,348.78 and 18,379,419.48

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Solution

The fourth proportional to 28,288,978.92, 39,048,348.78 and 18,379,419.48 is: 25,369,808.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288,978.92 : 39,048,348.78 = 18,379,419.48 : x
  2. Step 2: Convert to fraction form
    28,288,978.92/39,048,348.78 = 18,379,419.48/x
  3. Step 3: Cross multiply
    28,288,978.92x = 39,048,348.78 × 18,379,419.48
  4. Step 4: Simplify right side
    28,288,978.92x = 717,685,982,228,966.25
  5. Step 5: Solve for x
    x = 717,685,982,228,966.25/28,288,978.92
  6. Step 6: Final answer
    x = 25,369,808.65

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Why These Related Problems?

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