Home / 639,270.30-958,905.45-628,772.70

Finding the Fourth Proportional to 639,270.30, 958,905.45 and 628,772.70

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Solution

The fourth proportional to 639,270.30, 958,905.45 and 628,772.70 is: 943,159.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,270.30 : 958,905.45 = 628,772.70 : x
  2. Step 2: Convert to fraction form
    639,270.30/958,905.45 = 628,772.70/x
  3. Step 3: Cross multiply
    639,270.30x = 958,905.45 × 628,772.70
  4. Step 4: Simplify right side
    639,270.30x = 602,933,568,841.22
  5. Step 5: Solve for x
    x = 602,933,568,841.22/639,270.30
  6. Step 6: Final answer
    x = 943,159.05

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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.