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Finding the Fourth Proportional to 1,722,677.72, 2,584,559.66 and 811,823.39

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Solution

The fourth proportional to 1,722,677.72, 2,584,559.66 and 811,823.39 is: 1,217,991.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722,677.72 : 2,584,559.66 = 811,823.39 : x
  2. Step 2: Convert to fraction form
    1,722,677.72/2,584,559.66 = 811,823.39/x
  3. Step 3: Cross multiply
    1,722,677.72x = 2,584,559.66 × 811,823.39
  4. Step 4: Simplify right side
    1,722,677.72x = 2,098,205,993,329.41
  5. Step 5: Solve for x
    x = 2,098,205,993,329.41/1,722,677.72
  6. Step 6: Final answer
    x = 1,217,991.02

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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.