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Finding the Fourth Proportional to 617,887.20, 926,139.60 and 262,840.80

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Solution

The fourth proportional to 617,887.20, 926,139.60 and 262,840.80 is: 393,967.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,887.20 : 926,139.60 = 262,840.80 : x
  2. Step 2: Convert to fraction form
    617,887.20/926,139.60 = 262,840.80/x
  3. Step 3: Cross multiply
    617,887.20x = 926,139.60 × 262,840.80
  4. Step 4: Simplify right side
    617,887.20x = 243,427,273,375.68
  5. Step 5: Solve for x
    x = 243,427,273,375.68/617,887.20
  6. Step 6: Final answer
    x = 393,967.17

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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.