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Finding the Fourth Proportional to 959,440, 1,324,143.84 and 557,032

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Solution

The fourth proportional to 959,440, 1,324,143.84 and 557,032 is: 768,771.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    959,440 : 1,324,143.84 = 557,032 : x
  2. Step 2: Convert to fraction form
    959,440/1,324,143.84 = 557,032/x
  3. Step 3: Cross multiply
    959,440x = 1,324,143.84 × 557,032
  4. Step 4: Simplify right side
    959,440x = 737,590,491,482.88
  5. Step 5: Solve for x
    x = 737,590,491,482.88/959,440
  6. Step 6: Final answer
    x = 768,771.88

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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.