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Finding the Fourth Proportional to 616,253.39, 923,767.73 and 428,871.23

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Solution

The fourth proportional to 616,253.39, 923,767.73 and 428,871.23 is: 642,880.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,253.39 : 923,767.73 = 428,871.23 : x
  2. Step 2: Convert to fraction form
    616,253.39/923,767.73 = 428,871.23/x
  3. Step 3: Cross multiply
    616,253.39x = 923,767.73 × 428,871.23
  4. Step 4: Simplify right side
    616,253.39x = 396,177,400,455.05
  5. Step 5: Solve for x
    x = 396,177,400,455.05/616,253.39
  6. Step 6: Final answer
    x = 642,880.68

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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.