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Finding the Fourth Proportional to 622,785.84, 859,507.94 and 381,228.04

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Solution

The fourth proportional to 622,785.84, 859,507.94 and 381,228.04 is: 526,133.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,785.84 : 859,507.94 = 381,228.04 : x
  2. Step 2: Convert to fraction form
    622,785.84/859,507.94 = 381,228.04/x
  3. Step 3: Cross multiply
    622,785.84x = 859,507.94 × 381,228.04
  4. Step 4: Simplify right side
    622,785.84x = 327,668,527,330.64
  5. Step 5: Solve for x
    x = 327,668,527,330.64/622,785.84
  6. Step 6: Final answer
    x = 526,133.55

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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.