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Finding the Fourth Proportional to 1,786,074.80, 2,679,407.40 and 827,488.40

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Solution

The fourth proportional to 1,786,074.80, 2,679,407.40 and 827,488.40 is: 1,241,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,074.80 : 2,679,407.40 = 827,488.40 : x
  2. Step 2: Convert to fraction form
    1,786,074.80/2,679,407.40 = 827,488.40/x
  3. Step 3: Cross multiply
    1,786,074.80x = 2,679,407.40 × 827,488.40
  4. Step 4: Simplify right side
    1,786,074.80x = 2,217,178,542,374.16
  5. Step 5: Solve for x
    x = 2,217,178,542,374.16/1,786,074.80
  6. Step 6: Final answer
    x = 1,241,369.37

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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.