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Finding the Fourth Proportional to 603,179.49, 903,390.78 and 287,857.83

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Solution

The fourth proportional to 603,179.49, 903,390.78 and 287,857.83 is: 431,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,179.49 : 903,390.78 = 287,857.83 : x
  2. Step 2: Convert to fraction form
    603,179.49/903,390.78 = 287,857.83/x
  3. Step 3: Cross multiply
    603,179.49x = 903,390.78 × 287,857.83
  4. Step 4: Simplify right side
    603,179.49x = 260,048,109,572.81
  5. Step 5: Solve for x
    x = 260,048,109,572.81/603,179.49
  6. Step 6: Final answer
    x = 431,128.90

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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.