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Finding the Fourth Proportional to 880,801.70, 1,321,720.95 and 319,892.90

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Solution

The fourth proportional to 880,801.70, 1,321,720.95 and 319,892.90 is: 480,027.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,801.70 : 1,321,720.95 = 319,892.90 : x
  2. Step 2: Convert to fraction form
    880,801.70/1,321,720.95 = 319,892.90/x
  3. Step 3: Cross multiply
    880,801.70x = 1,321,720.95 × 319,892.90
  4. Step 4: Simplify right side
    880,801.70x = 422,809,147,686.26
  5. Step 5: Solve for x
    x = 422,809,147,686.26/880,801.70
  6. Step 6: Final answer
    x = 480,027.62

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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.