Home / 863,997.60-1,295,996.40-391,605.60

Finding the Fourth Proportional to 863,997.60, 1,295,996.40 and 391,605.60

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Solution

The fourth proportional to 863,997.60, 1,295,996.40 and 391,605.60 is: 587,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,997.60 : 1,295,996.40 = 391,605.60 : x
  2. Step 2: Convert to fraction form
    863,997.60/1,295,996.40 = 391,605.60/x
  3. Step 3: Cross multiply
    863,997.60x = 1,295,996.40 × 391,605.60
  4. Step 4: Simplify right side
    863,997.60x = 507,519,447,819.84
  5. Step 5: Solve for x
    x = 507,519,447,819.84/863,997.60
  6. Step 6: Final answer
    x = 587,408.40

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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.