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Finding the Fourth Proportional to 702,365,579.96, 969,324,021.72 and 389,198,027.48

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Solution

The fourth proportional to 702,365,579.96, 969,324,021.72 and 389,198,027.48 is: 537,126,260.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,365,579.96 : 969,324,021.72 = 389,198,027.48 : x
  2. Step 2: Convert to fraction form
    702,365,579.96/969,324,021.72 = 389,198,027.48/x
  3. Step 3: Cross multiply
    702,365,579.96x = 969,324,021.72 × 389,198,027.48
  4. Step 4: Simplify right side
    702,365,579.96x = 377,258,997,237,558,080
  5. Step 5: Solve for x
    x = 377,258,997,237,558,080/702,365,579.96
  6. Step 6: Final answer
    x = 537,126,260.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.