Home / 643,815,260.40-965,722,890.60-512,301,327.60

Finding the Fourth Proportional to 643,815,260.40, 965,722,890.60 and 512,301,327.60

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Solution

The fourth proportional to 643,815,260.40, 965,722,890.60 and 512,301,327.60 is: 768,451,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,815,260.40 : 965,722,890.60 = 512,301,327.60 : x
  2. Step 2: Convert to fraction form
    643,815,260.40/965,722,890.60 = 512,301,327.60/x
  3. Step 3: Cross multiply
    643,815,260.40x = 965,722,890.60 × 512,301,327.60
  4. Step 4: Simplify right side
    643,815,260.40x = 494,741,118,948,089,600
  5. Step 5: Solve for x
    x = 494,741,118,948,089,600/643,815,260.40
  6. Step 6: Final answer
    x = 768,451,991.40

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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.