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Finding the Fourth Proportional to 638,490.60, 957,659.10 and 264,474.60

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Solution

The fourth proportional to 638,490.60, 957,659.10 and 264,474.60 is: 396,680.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,490.60 : 957,659.10 = 264,474.60 : x
  2. Step 2: Convert to fraction form
    638,490.60/957,659.10 = 264,474.60/x
  3. Step 3: Cross multiply
    638,490.60x = 957,659.10 × 264,474.60
  4. Step 4: Simplify right side
    638,490.60x = 253,276,507,408.86
  5. Step 5: Solve for x
    x = 253,276,507,408.86/638,490.60
  6. Step 6: Final answer
    x = 396,680.09

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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.