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Finding the Fourth Proportional to 617,871.30, 925,640.55 and 317,328.90

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Solution

The fourth proportional to 617,871.30, 925,640.55 and 317,328.90 is: 475,394.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,871.30 : 925,640.55 = 317,328.90 : x
  2. Step 2: Convert to fraction form
    617,871.30/925,640.55 = 317,328.90/x
  3. Step 3: Cross multiply
    617,871.30x = 925,640.55 × 317,328.90
  4. Step 4: Simplify right side
    617,871.30x = 293,732,497,526.90
  5. Step 5: Solve for x
    x = 293,732,497,526.90/617,871.30
  6. Step 6: Final answer
    x = 475,394.31

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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.