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Finding the Fourth Proportional to 619,635.97, 928,814.46 and 260,015.64

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Solution

The fourth proportional to 619,635.97, 928,814.46 and 260,015.64 is: 389,755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,635.97 : 928,814.46 = 260,015.64 : x
  2. Step 2: Convert to fraction form
    619,635.97/928,814.46 = 260,015.64/x
  3. Step 3: Cross multiply
    619,635.97x = 928,814.46 × 260,015.64
  4. Step 4: Simplify right side
    619,635.97x = 241,506,286,258.15
  5. Step 5: Solve for x
    x = 241,506,286,258.15/619,635.97
  6. Step 6: Final answer
    x = 389,755.11

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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.