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Finding the Fourth Proportional to 617,899.80, 862,960.20 and 617,899.80

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Solution

The fourth proportional to 617,899.80, 862,960.20 and 617,899.80 is: 862,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,899.80 : 862,960.20 = 617,899.80 : x
  2. Step 2: Convert to fraction form
    617,899.80/862,960.20 = 617,899.80/x
  3. Step 3: Cross multiply
    617,899.80x = 862,960.20 × 617,899.80
  4. Step 4: Simplify right side
    617,899.80x = 533,222,934,987.96
  5. Step 5: Solve for x
    x = 533,222,934,987.96/617,899.80
  6. Step 6: Final answer
    x = 862,960.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.