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Finding the Fourth Proportional to 645,012.65, 967,635.75 and 265,722.62

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Solution

The fourth proportional to 645,012.65, 967,635.75 and 265,722.62 is: 398,632.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,012.65 : 967,635.75 = 265,722.62 : x
  2. Step 2: Convert to fraction form
    645,012.65/967,635.75 = 265,722.62/x
  3. Step 3: Cross multiply
    645,012.65x = 967,635.75 × 265,722.62
  4. Step 4: Simplify right side
    645,012.65x = 257,122,701,857.49
  5. Step 5: Solve for x
    x = 257,122,701,857.49/645,012.65
  6. Step 6: Final answer
    x = 398,632.03

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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.