Home / 538,876.53-743,649.66-309,448.89

Finding the Fourth Proportional to 538,876.53, 743,649.66 and 309,448.89

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Solution

The fourth proportional to 538,876.53, 743,649.66 and 309,448.89 is: 427,039.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,876.53 : 743,649.66 = 309,448.89 : x
  2. Step 2: Convert to fraction form
    538,876.53/743,649.66 = 309,448.89/x
  3. Step 3: Cross multiply
    538,876.53x = 743,649.66 × 309,448.89
  4. Step 4: Simplify right side
    538,876.53x = 230,121,561,835.88
  5. Step 5: Solve for x
    x = 230,121,561,835.88/538,876.53
  6. Step 6: Final answer
    x = 427,039.50

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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.