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Finding the Fourth Proportional to 603,179.98, 903,391.54 and 287,858.32

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Solution

The fourth proportional to 603,179.98, 903,391.54 and 287,858.32 is: 431,129.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,179.98 : 903,391.54 = 287,858.32 : x
  2. Step 2: Convert to fraction form
    603,179.98/903,391.54 = 287,858.32/x
  3. Step 3: Cross multiply
    603,179.98x = 903,391.54 × 287,858.32
  4. Step 4: Simplify right side
    603,179.98x = 260,048,771,006.61
  5. Step 5: Solve for x
    x = 260,048,771,006.61/603,179.98
  6. Step 6: Final answer
    x = 431,129.65

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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.