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Finding the Fourth Proportional to 864,481.60, 1,295,847.60 and 509,312.80

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Solution

The fourth proportional to 864,481.60, 1,295,847.60 and 509,312.80 is: 763,453.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,481.60 : 1,295,847.60 = 509,312.80 : x
  2. Step 2: Convert to fraction form
    864,481.60/1,295,847.60 = 509,312.80/x
  3. Step 3: Cross multiply
    864,481.60x = 1,295,847.60 × 509,312.80
  4. Step 4: Simplify right side
    864,481.60x = 659,991,769,529.28
  5. Step 5: Solve for x
    x = 659,991,769,529.28/864,481.60
  6. Step 6: Final answer
    x = 763,453.81

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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.