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Finding the Fourth Proportional to 638,851.20, 957,662.40 and 496,617.60

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Solution

The fourth proportional to 638,851.20, 957,662.40 and 496,617.60 is: 744,448.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,851.20 : 957,662.40 = 496,617.60 : x
  2. Step 2: Convert to fraction form
    638,851.20/957,662.40 = 496,617.60/x
  3. Step 3: Cross multiply
    638,851.20x = 957,662.40 × 496,617.60
  4. Step 4: Simplify right side
    638,851.20x = 475,592,002,698.24
  5. Step 5: Solve for x
    x = 475,592,002,698.24/638,851.20
  6. Step 6: Final answer
    x = 744,448.79

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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.