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Finding the Fourth Proportional to 638,009.60, 956,937.60 and 263,993.60

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Solution

The fourth proportional to 638,009.60, 956,937.60 and 263,993.60 is: 395,958.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,009.60 : 956,937.60 = 263,993.60 : x
  2. Step 2: Convert to fraction form
    638,009.60/956,937.60 = 263,993.60/x
  3. Step 3: Cross multiply
    638,009.60x = 956,937.60 × 263,993.60
  4. Step 4: Simplify right side
    638,009.60x = 252,625,401,999.36
  5. Step 5: Solve for x
    x = 252,625,401,999.36/638,009.60
  6. Step 6: Final answer
    x = 395,958.62

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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.