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Finding the Fourth Proportional to 420,044.92, 629,354.58 and 253,483

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Solution

The fourth proportional to 420,044.92, 629,354.58 and 253,483 is: 379,794.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,044.92 : 629,354.58 = 253,483 : x
  2. Step 2: Convert to fraction form
    420,044.92/629,354.58 = 253,483/x
  3. Step 3: Cross multiply
    420,044.92x = 629,354.58 × 253,483
  4. Step 4: Simplify right side
    420,044.92x = 159,530,687,002.14
  5. Step 5: Solve for x
    x = 159,530,687,002.14/420,044.92
  6. Step 6: Final answer
    x = 379,794.35

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1.5x scale

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.