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Finding the Fourth Proportional to 693,395.64, 956,867.64 and 387,474.54

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Solution

The fourth proportional to 693,395.64, 956,867.64 and 387,474.54 is: 534,704.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,395.64 : 956,867.64 = 387,474.54 : x
  2. Step 2: Convert to fraction form
    693,395.64/956,867.64 = 387,474.54/x
  3. Step 3: Cross multiply
    693,395.64x = 956,867.64 × 387,474.54
  4. Step 4: Simplify right side
    693,395.64x = 370,761,848,649.89
  5. Step 5: Solve for x
    x = 370,761,848,649.89/693,395.64
  6. Step 6: Final answer
    x = 534,704.61

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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.