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Finding the Fourth Proportional to 625,986.72, 863,862.08 and 339,506.72

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Solution

The fourth proportional to 625,986.72, 863,862.08 and 339,506.72 is: 468,519.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,986.72 : 863,862.08 = 339,506.72 : x
  2. Step 2: Convert to fraction form
    625,986.72/863,862.08 = 339,506.72/x
  3. Step 3: Cross multiply
    625,986.72x = 863,862.08 × 339,506.72
  4. Step 4: Simplify right side
    625,986.72x = 293,286,981,313.18
  5. Step 5: Solve for x
    x = 293,286,981,313.18/625,986.72
  6. Step 6: Final answer
    x = 468,519.49

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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.