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Finding the Fourth Proportional to 702,365,601.76, 969,324,051.97 and 389,198,049.28

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Solution

The fourth proportional to 702,365,601.76, 969,324,051.97 and 389,198,049.28 is: 537,126,290.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,365,601.76 : 969,324,051.97 = 389,198,049.28 : x
  2. Step 2: Convert to fraction form
    702,365,601.76/969,324,051.97 = 389,198,049.28/x
  3. Step 3: Cross multiply
    702,365,601.76x = 969,324,051.97 × 389,198,049.28
  4. Step 4: Simplify right side
    702,365,601.76x = 377,259,030,146,909,312
  5. Step 5: Solve for x
    x = 377,259,030,146,909,312/702,365,601.76
  6. Step 6: Final answer
    x = 537,126,290.36

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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.