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Finding the Fourth Proportional to 638,682,375.60, 958,023,563.40 and 638,682,375.60

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Solution

The fourth proportional to 638,682,375.60, 958,023,563.40 and 638,682,375.60 is: 958,023,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,682,375.60 : 958,023,563.40 = 638,682,375.60 : x
  2. Step 2: Convert to fraction form
    638,682,375.60/958,023,563.40 = 638,682,375.60/x
  3. Step 3: Cross multiply
    638,682,375.60x = 958,023,563.40 × 638,682,375.60
  4. Step 4: Simplify right side
    638,682,375.60x = 611,872,765,353,089,280
  5. Step 5: Solve for x
    x = 611,872,765,353,089,280/638,682,375.60
  6. Step 6: Final answer
    x = 958,023,563.40

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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.