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Finding the Fourth Proportional to 501,321.22, 691,419.45 and 440,763.46

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Solution

The fourth proportional to 501,321.22, 691,419.45 and 440,763.46 is: 607,898.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,321.22 : 691,419.45 = 440,763.46 : x
  2. Step 2: Convert to fraction form
    501,321.22/691,419.45 = 440,763.46/x
  3. Step 3: Cross multiply
    501,321.22x = 691,419.45 × 440,763.46
  4. Step 4: Simplify right side
    501,321.22x = 304,752,429,093.30
  5. Step 5: Solve for x
    x = 304,752,429,093.30/501,321.22
  6. Step 6: Final answer
    x = 607,898.52

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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.