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Finding the Fourth Proportional to 639,796.54, 959,692.05 and 260,632.72

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Solution

The fourth proportional to 639,796.54, 959,692.05 and 260,632.72 is: 390,947.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,796.54 : 959,692.05 = 260,632.72 : x
  2. Step 2: Convert to fraction form
    639,796.54/959,692.05 = 260,632.72/x
  3. Step 3: Cross multiply
    639,796.54x = 959,692.05 × 260,632.72
  4. Step 4: Simplify right side
    639,796.54x = 250,127,149,353.88
  5. Step 5: Solve for x
    x = 250,127,149,353.88/639,796.54
  6. Step 6: Final answer
    x = 390,947.96

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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.