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Finding the Fourth Proportional to 508,955.20, 761,877.60 and 396,980.80

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Solution

The fourth proportional to 508,955.20, 761,877.60 and 396,980.80 is: 594,258.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,955.20 : 761,877.60 = 396,980.80 : x
  2. Step 2: Convert to fraction form
    508,955.20/761,877.60 = 396,980.80/x
  3. Step 3: Cross multiply
    508,955.20x = 761,877.60 × 396,980.80
  4. Step 4: Simplify right side
    508,955.20x = 302,450,779,150.08
  5. Step 5: Solve for x
    x = 302,450,779,150.08/508,955.20
  6. Step 6: Final answer
    x = 594,258.16

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