Home / 639,246.60-958,869.90-265,998.60

Finding the Fourth Proportional to 639,246.60, 958,869.90 and 265,998.60

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Solution

The fourth proportional to 639,246.60, 958,869.90 and 265,998.60 is: 398,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,246.60 : 958,869.90 = 265,998.60 : x
  2. Step 2: Convert to fraction form
    639,246.60/958,869.90 = 265,998.60/x
  3. Step 3: Cross multiply
    639,246.60x = 958,869.90 × 265,998.60
  4. Step 4: Simplify right side
    639,246.60x = 255,058,050,982.14
  5. Step 5: Solve for x
    x = 255,058,050,982.14/639,246.60
  6. Step 6: Final answer
    x = 398,997.90

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Double scale
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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.