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Finding the Fourth Proportional to 519,776.80, 779,276.40 and 283,386.40

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Solution

The fourth proportional to 519,776.80, 779,276.40 and 283,386.40 is: 424,867.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,776.80 : 779,276.40 = 283,386.40 : x
  2. Step 2: Convert to fraction form
    519,776.80/779,276.40 = 283,386.40/x
  3. Step 3: Cross multiply
    519,776.80x = 779,276.40 × 283,386.40
  4. Step 4: Simplify right side
    519,776.80x = 220,836,333,600.96
  5. Step 5: Solve for x
    x = 220,836,333,600.96/519,776.80
  6. Step 6: Final answer
    x = 424,867.62

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