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Finding the Fourth Proportional to 639,701.26, 959,883.99 and 260,899.90

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Solution

The fourth proportional to 639,701.26, 959,883.99 and 260,899.90 is: 391,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,701.26 : 959,883.99 = 260,899.90 : x
  2. Step 2: Convert to fraction form
    639,701.26/959,883.99 = 260,899.90/x
  3. Step 3: Cross multiply
    639,701.26x = 959,883.99 × 260,899.90
  4. Step 4: Simplify right side
    639,701.26x = 250,433,639,023.86
  5. Step 5: Solve for x
    x = 250,433,639,023.86/639,701.26
  6. Step 6: Final answer
    x = 391,485.30

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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.