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Finding the Fourth Proportional to 619,477.44, 854,978.40 and 351,291.84

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Solution

The fourth proportional to 619,477.44, 854,978.40 and 351,291.84 is: 484,839.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,477.44 : 854,978.40 = 351,291.84 : x
  2. Step 2: Convert to fraction form
    619,477.44/854,978.40 = 351,291.84/x
  3. Step 3: Cross multiply
    619,477.44x = 854,978.40 × 351,291.84
  4. Step 4: Simplify right side
    619,477.44x = 300,346,935,296.26
  5. Step 5: Solve for x
    x = 300,346,935,296.26/619,477.44
  6. Step 6: Final answer
    x = 484,839.18

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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.