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Finding the Fourth Proportional to 553,449.32, 763,817.47 and 338,732.36

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Solution

The fourth proportional to 553,449.32, 763,817.47 and 338,732.36 is: 467,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,449.32 : 763,817.47 = 338,732.36 : x
  2. Step 2: Convert to fraction form
    553,449.32/763,817.47 = 338,732.36/x
  3. Step 3: Cross multiply
    553,449.32x = 763,817.47 × 338,732.36
  4. Step 4: Simplify right side
    553,449.32x = 258,729,689,556.41
  5. Step 5: Solve for x
    x = 258,729,689,556.41/553,449.32
  6. Step 6: Final answer
    x = 467,485.79

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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.