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Finding the Fourth Proportional to 1,786,796.78, 2,465,771.43 and 970,985.03

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Solution

The fourth proportional to 1,786,796.78, 2,465,771.43 and 970,985.03 is: 1,339,954.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,796.78 : 2,465,771.43 = 970,985.03 : x
  2. Step 2: Convert to fraction form
    1,786,796.78/2,465,771.43 = 970,985.03/x
  3. Step 3: Cross multiply
    1,786,796.78x = 2,465,771.43 × 970,985.03
  4. Step 4: Simplify right side
    1,786,796.78x = 2,394,227,145,931.69
  5. Step 5: Solve for x
    x = 2,394,227,145,931.69/1,786,796.78
  6. Step 6: Final answer
    x = 1,339,954.93

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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.