Home / 947,885.28-1,308,078.72-518,165.60

Finding the Fourth Proportional to 947,885.28, 1,308,078.72 and 518,165.60

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Solution

The fourth proportional to 947,885.28, 1,308,078.72 and 518,165.60 is: 715,066.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,885.28 : 1,308,078.72 = 518,165.60 : x
  2. Step 2: Convert to fraction form
    947,885.28/1,308,078.72 = 518,165.60/x
  3. Step 3: Cross multiply
    947,885.28x = 1,308,078.72 × 518,165.60
  4. Step 4: Simplify right side
    947,885.28x = 677,801,394,796.03
  5. Step 5: Solve for x
    x = 677,801,394,796.03/947,885.28
  6. Step 6: Final answer
    x = 715,066.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.