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Finding the Fourth Proportional to 625,695, 864,171.90 and 424,141.08

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Solution

The fourth proportional to 625,695, 864,171.90 and 424,141.08 is: 585,797.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,695 : 864,171.90 = 424,141.08 : x
  2. Step 2: Convert to fraction form
    625,695/864,171.90 = 424,141.08/x
  3. Step 3: Cross multiply
    625,695x = 864,171.90 × 424,141.08
  4. Step 4: Simplify right side
    625,695x = 366,530,802,971.65
  5. Step 5: Solve for x
    x = 366,530,802,971.65/625,695
  6. Step 6: Final answer
    x = 585,797.88

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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.