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Finding the Fourth Proportional to 858,796.56, 1,288,467 and 669,904.56

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Solution

The fourth proportional to 858,796.56, 1,288,467 and 669,904.56 is: 1,005,069.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,796.56 : 1,288,467 = 669,904.56 : x
  2. Step 2: Convert to fraction form
    858,796.56/1,288,467 = 669,904.56/x
  3. Step 3: Cross multiply
    858,796.56x = 1,288,467 × 669,904.56
  4. Step 4: Simplify right side
    858,796.56x = 863,149,918,709.52
  5. Step 5: Solve for x
    x = 863,149,918,709.52/858,796.56
  6. Step 6: Final answer
    x = 1,005,069.14

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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.