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Finding the Fourth Proportional to 526,791.45, 726,972.21 and 285,074.01

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Solution

The fourth proportional to 526,791.45, 726,972.21 and 285,074.01 is: 393,402.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,791.45 : 726,972.21 = 285,074.01 : x
  2. Step 2: Convert to fraction form
    526,791.45/726,972.21 = 285,074.01/x
  3. Step 3: Cross multiply
    526,791.45x = 726,972.21 × 285,074.01
  4. Step 4: Simplify right side
    526,791.45x = 207,240,883,063.26
  5. Step 5: Solve for x
    x = 207,240,883,063.26/526,791.45
  6. Step 6: Final answer
    x = 393,402.14

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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.