Home / 909,311.32-1,254,791.62-501,415.77

Finding the Fourth Proportional to 909,311.32, 1,254,791.62 and 501,415.77

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Solution

The fourth proportional to 909,311.32, 1,254,791.62 and 501,415.77 is: 691,921.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,311.32 : 1,254,791.62 = 501,415.77 : x
  2. Step 2: Convert to fraction form
    909,311.32/1,254,791.62 = 501,415.77/x
  3. Step 3: Cross multiply
    909,311.32x = 1,254,791.62 × 501,415.77
  4. Step 4: Simplify right side
    909,311.32x = 629,172,306,331.85
  5. Step 5: Solve for x
    x = 629,172,306,331.85/909,311.32
  6. Step 6: Final answer
    x = 691,921.78

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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.