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Finding the Fourth Proportional to 1,786,882.56, 2,465,905.92 and 982,118.40

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Solution

The fourth proportional to 1,786,882.56, 2,465,905.92 and 982,118.40 is: 1,355,327.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,882.56 : 2,465,905.92 = 982,118.40 : x
  2. Step 2: Convert to fraction form
    1,786,882.56/2,465,905.92 = 982,118.40/x
  3. Step 3: Cross multiply
    1,786,882.56x = 2,465,905.92 × 982,118.40
  4. Step 4: Simplify right side
    1,786,882.56x = 2,421,811,576,700.93
  5. Step 5: Solve for x
    x = 2,421,811,576,700.93/1,786,882.56
  6. Step 6: Final answer
    x = 1,355,327.78

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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.