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Finding the Fourth Proportional to 695,571.64, 959,924.84 and 389,630.16

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Solution

The fourth proportional to 695,571.64, 959,924.84 and 389,630.16 is: 537,709.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,571.64 : 959,924.84 = 389,630.16 : x
  2. Step 2: Convert to fraction form
    695,571.64/959,924.84 = 389,630.16/x
  3. Step 3: Cross multiply
    695,571.64x = 959,924.84 × 389,630.16
  4. Step 4: Simplify right side
    695,571.64x = 374,015,668,997.17
  5. Step 5: Solve for x
    x = 374,015,668,997.17/695,571.64
  6. Step 6: Final answer
    x = 537,709.77

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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.