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Finding the Fourth Proportional to 744,894.88, 1,027,978.24 and 422,618.56

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Solution

The fourth proportional to 744,894.88, 1,027,978.24 and 422,618.56 is: 583,226.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,894.88 : 1,027,978.24 = 422,618.56 : x
  2. Step 2: Convert to fraction form
    744,894.88/1,027,978.24 = 422,618.56/x
  3. Step 3: Cross multiply
    744,894.88x = 1,027,978.24 × 422,618.56
  4. Step 4: Simplify right side
    744,894.88x = 434,442,683,500.13
  5. Step 5: Solve for x
    x = 434,442,683,500.13/744,894.88
  6. Step 6: Final answer
    x = 583,226.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.