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Finding the Fourth Proportional to 603,265.96, 903,520.78 and 287,944.30

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Solution

The fourth proportional to 603,265.96, 903,520.78 and 287,944.30 is: 431,258.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,265.96 : 903,520.78 = 287,944.30 : x
  2. Step 2: Convert to fraction form
    603,265.96/903,520.78 = 287,944.30/x
  3. Step 3: Cross multiply
    603,265.96x = 903,520.78 × 287,944.30
  4. Step 4: Simplify right side
    603,265.96x = 260,163,652,575.23
  5. Step 5: Solve for x
    x = 260,163,652,575.23/603,265.96
  6. Step 6: Final answer
    x = 431,258.64

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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.