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Finding the Fourth Proportional to 553,874.46, 764,347.84 and 321,346.58

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Solution

The fourth proportional to 553,874.46, 764,347.84 and 321,346.58 is: 443,458.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,874.46 : 764,347.84 = 321,346.58 : x
  2. Step 2: Convert to fraction form
    553,874.46/764,347.84 = 321,346.58/x
  3. Step 3: Cross multiply
    553,874.46x = 764,347.84 × 321,346.58
  4. Step 4: Simplify right side
    553,874.46x = 245,620,564,314.39
  5. Step 5: Solve for x
    x = 245,620,564,314.39/553,874.46
  6. Step 6: Final answer
    x = 443,458.91

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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.