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Finding the Fourth Proportional to 458,577.40, 686,310.90 and 402,590.20

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Solution

The fourth proportional to 458,577.40, 686,310.90 and 402,590.20 is: 602,519.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,577.40 : 686,310.90 = 402,590.20 : x
  2. Step 2: Convert to fraction form
    458,577.40/686,310.90 = 402,590.20/x
  3. Step 3: Cross multiply
    458,577.40x = 686,310.90 × 402,590.20
  4. Step 4: Simplify right side
    458,577.40x = 276,302,042,493.18
  5. Step 5: Solve for x
    x = 276,302,042,493.18/458,577.40
  6. Step 6: Final answer
    x = 602,519.97

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