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Finding the Fourth Proportional to 959,536, 1,324,276.32 and 557,128

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Solution

The fourth proportional to 959,536, 1,324,276.32 and 557,128 is: 768,904.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    959,536 : 1,324,276.32 = 557,128 : x
  2. Step 2: Convert to fraction form
    959,536/1,324,276.32 = 557,128/x
  3. Step 3: Cross multiply
    959,536x = 1,324,276.32 × 557,128
  4. Step 4: Simplify right side
    959,536x = 737,791,417,608.96
  5. Step 5: Solve for x
    x = 737,791,417,608.96/959,536
  6. Step 6: Final answer
    x = 768,904.36

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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.