Home / 815,997,107.76-1,224,235,806.54-263,289,167.55

Finding the Fourth Proportional to 815,997,107.76, 1,224,235,806.54 and 263,289,167.55

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Solution

The fourth proportional to 815,997,107.76, 1,224,235,806.54 and 263,289,167.55 is: 395,011,236.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,997,107.76 : 1,224,235,806.54 = 263,289,167.55 : x
  2. Step 2: Convert to fraction form
    815,997,107.76/1,224,235,806.54 = 263,289,167.55/x
  3. Step 3: Cross multiply
    815,997,107.76x = 1,224,235,806.54 × 263,289,167.55
  4. Step 4: Simplify right side
    815,997,107.76x = 322,328,026,388,819,456
  5. Step 5: Solve for x
    x = 322,328,026,388,819,456/815,997,107.76
  6. Step 6: Final answer
    x = 395,011,236.34

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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.