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Finding the Fourth Proportional to 639,601.28, 959,400.48 and 260,679.68

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Solution

The fourth proportional to 639,601.28, 959,400.48 and 260,679.68 is: 391,018.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,601.28 : 959,400.48 = 260,679.68 : x
  2. Step 2: Convert to fraction form
    639,601.28/959,400.48 = 260,679.68/x
  3. Step 3: Cross multiply
    639,601.28x = 959,400.48 × 260,679.68
  4. Step 4: Simplify right side
    639,601.28x = 250,096,210,118.25
  5. Step 5: Solve for x
    x = 250,096,210,118.25/639,601.28
  6. Step 6: Final answer
    x = 391,018.93

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Similar ratio
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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.