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Finding the Fourth Proportional to 458,401.20, 687,796.20 and 290,050.80

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Solution

The fourth proportional to 458,401.20, 687,796.20 and 290,050.80 is: 435,199.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,401.20 : 687,796.20 = 290,050.80 : x
  2. Step 2: Convert to fraction form
    458,401.20/687,796.20 = 290,050.80/x
  3. Step 3: Cross multiply
    458,401.20x = 687,796.20 × 290,050.80
  4. Step 4: Simplify right side
    458,401.20x = 199,495,838,046.96
  5. Step 5: Solve for x
    x = 199,495,838,046.96/458,401.20
  6. Step 6: Final answer
    x = 435,199.21

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