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Finding the Fourth Proportional to 486,791.60, 730,462.32 and 262,147.28

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Solution

The fourth proportional to 486,791.60, 730,462.32 and 262,147.28 is: 393,368.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,791.60 : 730,462.32 = 262,147.28 : x
  2. Step 2: Convert to fraction form
    486,791.60/730,462.32 = 262,147.28/x
  3. Step 3: Cross multiply
    486,791.60x = 730,462.32 × 262,147.28
  4. Step 4: Simplify right side
    486,791.60x = 191,488,710,330.49
  5. Step 5: Solve for x
    x = 191,488,710,330.49/486,791.60
  6. Step 6: Final answer
    x = 393,368.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.