Home / 501,129.28-691,577.12-274,781.76

Finding the Fourth Proportional to 501,129.28, 691,577.12 and 274,781.76

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Solution

The fourth proportional to 501,129.28, 691,577.12 and 274,781.76 is: 379,209.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,129.28 : 691,577.12 = 274,781.76 : x
  2. Step 2: Convert to fraction form
    501,129.28/691,577.12 = 274,781.76/x
  3. Step 3: Cross multiply
    501,129.28x = 691,577.12 × 274,781.76
  4. Step 4: Simplify right side
    501,129.28x = 190,032,778,209.33
  5. Step 5: Solve for x
    x = 190,032,778,209.33/501,129.28
  6. Step 6: Final answer
    x = 379,209.09

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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.