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Finding the Fourth Proportional to 420,246.30, 629,494.65 and 420,246.30

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Solution

The fourth proportional to 420,246.30, 629,494.65 and 420,246.30 is: 629,494.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,246.30 : 629,494.65 = 420,246.30 : x
  2. Step 2: Convert to fraction form
    420,246.30/629,494.65 = 420,246.30/x
  3. Step 3: Cross multiply
    420,246.30x = 629,494.65 × 420,246.30
  4. Step 4: Simplify right side
    420,246.30x = 264,542,797,532.30
  5. Step 5: Solve for x
    x = 264,542,797,532.30/420,246.30
  6. Step 6: Final answer
    x = 629,494.65

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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.