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Finding the Fourth Proportional to 1,260,613.06, 1,890,936.06 and 419,164.90

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Solution

The fourth proportional to 1,260,613.06, 1,890,936.06 and 419,164.90 is: 628,752.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,613.06 : 1,890,936.06 = 419,164.90 : x
  2. Step 2: Convert to fraction form
    1,260,613.06/1,890,936.06 = 419,164.90/x
  3. Step 3: Cross multiply
    1,260,613.06x = 1,890,936.06 × 419,164.90
  4. Step 4: Simplify right side
    1,260,613.06x = 792,614,024,496.29
  5. Step 5: Solve for x
    x = 792,614,024,496.29/1,260,613.06
  6. Step 6: Final answer
    x = 628,752.83

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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.