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Finding the Fourth Proportional to 694,675.92, 958,693.20 and 388,749.72

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Solution

The fourth proportional to 694,675.92, 958,693.20 and 388,749.72 is: 536,497.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,675.92 : 958,693.20 = 388,749.72 : x
  2. Step 2: Convert to fraction form
    694,675.92/958,693.20 = 388,749.72/x
  3. Step 3: Cross multiply
    694,675.92x = 958,693.20 × 388,749.72
  4. Step 4: Simplify right side
    694,675.92x = 372,691,713,065.90
  5. Step 5: Solve for x
    x = 372,691,713,065.90/694,675.92
  6. Step 6: Final answer
    x = 536,497.24

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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.