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Finding the Fourth Proportional to 978,179.60, 1,467,998.40 and 504,621.20

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Solution

The fourth proportional to 978,179.60, 1,467,998.40 and 504,621.20 is: 757,307.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,179.60 : 1,467,998.40 = 504,621.20 : x
  2. Step 2: Convert to fraction form
    978,179.60/1,467,998.40 = 504,621.20/x
  3. Step 3: Cross multiply
    978,179.60x = 1,467,998.40 × 504,621.20
  4. Step 4: Simplify right side
    978,179.60x = 740,783,114,206.08
  5. Step 5: Solve for x
    x = 740,783,114,206.08/978,179.60
  6. Step 6: Final answer
    x = 757,307.87

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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.