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Finding the Fourth Proportional to 639,729.63, 959,926.68 and 260,928.27

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Solution

The fourth proportional to 639,729.63, 959,926.68 and 260,928.27 is: 391,527.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,729.63 : 959,926.68 = 260,928.27 : x
  2. Step 2: Convert to fraction form
    639,729.63/959,926.68 = 260,928.27/x
  3. Step 3: Cross multiply
    639,729.63x = 959,926.68 × 260,928.27
  4. Step 4: Simplify right side
    639,729.63x = 250,472,007,939.24
  5. Step 5: Solve for x
    x = 250,472,007,939.24/639,729.63
  6. Step 6: Final answer
    x = 391,527.91

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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.