Home / 645,466.20-890,754.80-358,986.42

Finding the Fourth Proportional to 645,466.20, 890,754.80 and 358,986.42

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Solution

The fourth proportional to 645,466.20, 890,754.80 and 358,986.42 is: 495,407.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,466.20 : 890,754.80 = 358,986.42 : x
  2. Step 2: Convert to fraction form
    645,466.20/890,754.80 = 358,986.42/x
  3. Step 3: Cross multiply
    645,466.20x = 890,754.80 × 358,986.42
  4. Step 4: Simplify right side
    645,466.20x = 319,768,876,749.82
  5. Step 5: Solve for x
    x = 319,768,876,749.82/645,466.20
  6. Step 6: Final answer
    x = 495,407.62

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