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Finding the Fourth Proportional to 439,797.67, 606,986.06 and 278,667.81

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Solution

The fourth proportional to 439,797.67, 606,986.06 and 278,667.81 is: 384,602.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,797.67 : 606,986.06 = 278,667.81 : x
  2. Step 2: Convert to fraction form
    439,797.67/606,986.06 = 278,667.81/x
  3. Step 3: Cross multiply
    439,797.67x = 606,986.06 × 278,667.81
  4. Step 4: Simplify right side
    439,797.67x = 169,147,474,647.39
  5. Step 5: Solve for x
    x = 169,147,474,647.39/439,797.67
  6. Step 6: Final answer
    x = 384,602.94

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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.