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Finding the Fourth Proportional to 574,138.06, 859,100.81 and 479,133.72

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Solution

The fourth proportional to 574,138.06, 859,100.81 and 479,133.72 is: 716,942.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,138.06 : 859,100.81 = 479,133.72 : x
  2. Step 2: Convert to fraction form
    574,138.06/859,100.81 = 479,133.72/x
  3. Step 3: Cross multiply
    574,138.06x = 859,100.81 × 479,133.72
  4. Step 4: Simplify right side
    574,138.06x = 411,624,164,554.65
  5. Step 5: Solve for x
    x = 411,624,164,554.65/574,138.06
  6. Step 6: Final answer
    x = 716,942.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.