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Finding the Fourth Proportional to 928,928, 1,393,626.18 and 264,080

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Solution

The fourth proportional to 928,928, 1,393,626.18 and 264,080 is: 396,186.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,928 : 1,393,626.18 = 264,080 : x
  2. Step 2: Convert to fraction form
    928,928/1,393,626.18 = 264,080/x
  3. Step 3: Cross multiply
    928,928x = 1,393,626.18 × 264,080
  4. Step 4: Simplify right side
    928,928x = 368,028,801,614.40
  5. Step 5: Solve for x
    x = 368,028,801,614.40/928,928
  6. Step 6: Final answer
    x = 396,186.57

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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.