Home / 755,515,769.20-1,042,601,163.36-421,002,390.73

Finding the Fourth Proportional to 755,515,769.20, 1,042,601,163.36 and 421,002,390.73

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Solution

The fourth proportional to 755,515,769.20, 1,042,601,163.36 and 421,002,390.73 is: 580,977,393.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,515,769.20 : 1,042,601,163.36 = 421,002,390.73 : x
  2. Step 2: Convert to fraction form
    755,515,769.20/1,042,601,163.36 = 421,002,390.73/x
  3. Step 3: Cross multiply
    755,515,769.20x = 1,042,601,163.36 × 421,002,390.73
  4. Step 4: Simplify right side
    755,515,769.20x = 438,937,582,352,439,296
  5. Step 5: Solve for x
    x = 438,937,582,352,439,296/755,515,769.20
  6. Step 6: Final answer
    x = 580,977,393.52

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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.