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Finding the Fourth Proportional to 903,768, 1,355,652 and 312,792

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Solution

The fourth proportional to 903,768, 1,355,652 and 312,792 is: 469,188

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,768 : 1,355,652 = 312,792 : x
  2. Step 2: Convert to fraction form
    903,768/1,355,652 = 312,792/x
  3. Step 3: Cross multiply
    903,768x = 1,355,652 × 312,792
  4. Step 4: Simplify right side
    903,768x = 424,037,100,384
  5. Step 5: Solve for x
    x = 424,037,100,384/903,768
  6. Step 6: Final answer
    x = 469,188

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