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Finding the Fourth Proportional to 553,774.62, 764,618.49 and 339,207.78

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Solution

The fourth proportional to 553,774.62, 764,618.49 and 339,207.78 is: 468,357.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,774.62 : 764,618.49 = 339,207.78 : x
  2. Step 2: Convert to fraction form
    553,774.62/764,618.49 = 339,207.78/x
  3. Step 3: Cross multiply
    553,774.62x = 764,618.49 × 339,207.78
  4. Step 4: Simplify right side
    553,774.62x = 259,364,540,539.85
  5. Step 5: Solve for x
    x = 259,364,540,539.85/553,774.62
  6. Step 6: Final answer
    x = 468,357.58

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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.