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Finding the Fourth Proportional to 639,816.50, 959,722 and 260,652.67

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Solution

The fourth proportional to 639,816.50, 959,722 and 260,652.67 is: 390,977.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,816.50 : 959,722 = 260,652.67 : x
  2. Step 2: Convert to fraction form
    639,816.50/959,722 = 260,652.67/x
  3. Step 3: Cross multiply
    639,816.50x = 959,722 × 260,652.67
  4. Step 4: Simplify right side
    639,816.50x = 250,154,101,757.74
  5. Step 5: Solve for x
    x = 250,154,101,757.74/639,816.50
  6. Step 6: Final answer
    x = 390,977.88

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.