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Finding the Fourth Proportional to 463,626.64, 639,579 and 302,408.56

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Solution

The fourth proportional to 463,626.64, 639,579 and 302,408.56 is: 417,176.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,626.64 : 639,579 = 302,408.56 : x
  2. Step 2: Convert to fraction form
    463,626.64/639,579 = 302,408.56/x
  3. Step 3: Cross multiply
    463,626.64x = 639,579 × 302,408.56
  4. Step 4: Simplify right side
    463,626.64x = 193,414,164,396.24
  5. Step 5: Solve for x
    x = 193,414,164,396.24/463,626.64
  6. Step 6: Final answer
    x = 417,176.55

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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.