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Finding the Fourth Proportional to 881,676.30, 1,321,348.05 and 781,365.90

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Solution

The fourth proportional to 881,676.30, 1,321,348.05 and 781,365.90 is: 1,171,015.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,676.30 : 1,321,348.05 = 781,365.90 : x
  2. Step 2: Convert to fraction form
    881,676.30/1,321,348.05 = 781,365.90/x
  3. Step 3: Cross multiply
    881,676.30x = 1,321,348.05 × 781,365.90
  4. Step 4: Simplify right side
    881,676.30x = 1,032,456,308,301.50
  5. Step 5: Solve for x
    x = 1,032,456,308,301.50/881,676.30
  6. Step 6: Final answer
    x = 1,171,015.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.