Home / 639,839.30-960,090.15-261,037.70

Finding the Fourth Proportional to 639,839.30, 960,090.15 and 261,037.70

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Solution

The fourth proportional to 639,839.30, 960,090.15 and 261,037.70 is: 391,691.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,839.30 : 960,090.15 = 261,037.70 : x
  2. Step 2: Convert to fraction form
    639,839.30/960,090.15 = 261,037.70/x
  3. Step 3: Cross multiply
    639,839.30x = 960,090.15 × 261,037.70
  4. Step 4: Simplify right side
    639,839.30x = 250,619,724,548.66
  5. Step 5: Solve for x
    x = 250,619,724,548.66/639,839.30
  6. Step 6: Final answer
    x = 391,691.67

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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.