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Finding the Fourth Proportional to 402,899.40, 604,349.10 and 122,380.20

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Solution

The fourth proportional to 402,899.40, 604,349.10 and 122,380.20 is: 183,570.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,899.40 : 604,349.10 = 122,380.20 : x
  2. Step 2: Convert to fraction form
    402,899.40/604,349.10 = 122,380.20/x
  3. Step 3: Cross multiply
    402,899.40x = 604,349.10 × 122,380.20
  4. Step 4: Simplify right side
    402,899.40x = 73,960,363,727.82
  5. Step 5: Solve for x
    x = 73,960,363,727.82/402,899.40
  6. Step 6: Final answer
    x = 183,570.30

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