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Finding the Fourth Proportional to 869,706.38, 1,304,682.64 and 270,728.08

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Solution

The fourth proportional to 869,706.38, 1,304,682.64 and 270,728.08 is: 406,130.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,706.38 : 1,304,682.64 = 270,728.08 : x
  2. Step 2: Convert to fraction form
    869,706.38/1,304,682.64 = 270,728.08/x
  3. Step 3: Cross multiply
    869,706.38x = 1,304,682.64 × 270,728.08
  4. Step 4: Simplify right side
    869,706.38x = 353,214,222,198.00
  5. Step 5: Solve for x
    x = 353,214,222,198.00/869,706.38
  6. Step 6: Final answer
    x = 406,130.42

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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.