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Finding the Fourth Proportional to 617,862.80, 925,627.80 and 317,320.40

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Solution

The fourth proportional to 617,862.80, 925,627.80 and 317,320.40 is: 475,381.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,862.80 : 925,627.80 = 317,320.40 : x
  2. Step 2: Convert to fraction form
    617,862.80/925,627.80 = 317,320.40/x
  3. Step 3: Cross multiply
    617,862.80x = 925,627.80 × 317,320.40
  4. Step 4: Simplify right side
    617,862.80x = 293,720,583,747.12
  5. Step 5: Solve for x
    x = 293,720,583,747.12/617,862.80
  6. Step 6: Final answer
    x = 475,381.56

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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.