Home / 755,515,768.20-1,042,601,161.98-421,002,389.73

Finding the Fourth Proportional to 755,515,768.20, 1,042,601,161.98 and 421,002,389.73

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Solution

The fourth proportional to 755,515,768.20, 1,042,601,161.98 and 421,002,389.73 is: 580,977,392.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,515,768.20 : 1,042,601,161.98 = 421,002,389.73 : x
  2. Step 2: Convert to fraction form
    755,515,768.20/1,042,601,161.98 = 421,002,389.73/x
  3. Step 3: Cross multiply
    755,515,768.20x = 1,042,601,161.98 × 421,002,389.73
  4. Step 4: Simplify right side
    755,515,768.20x = 438,937,580,728,854,848
  5. Step 5: Solve for x
    x = 438,937,580,728,854,848/755,515,768.20
  6. Step 6: Final answer
    x = 580,977,392.14

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1.5x scale

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.